Home / 5,210.76-7,191.28-3,115.30

Finding the Fourth Proportional to 5,210.76, 7,191.28 and 3,115.30

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Solution

The fourth proportional to 5,210.76, 7,191.28 and 3,115.30 is: 4,299.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,210.76 : 7,191.28 = 3,115.30 : x
  2. Step 2: Convert to fraction form
    5,210.76/7,191.28 = 3,115.30/x
  3. Step 3: Cross multiply
    5,210.76x = 7,191.28 × 3,115.30
  4. Step 4: Simplify right side
    5,210.76x = 22,402,994.58
  5. Step 5: Solve for x
    x = 22,402,994.58/5,210.76
  6. Step 6: Final answer
    x = 4,299.37

Related Problems

Find fourth proportional to 2,605.38, 3,595.64 and 1,557.65
Half scale
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Double scale
Find fourth proportional to 5,211.76, 7,192.66 and 3,116.30
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.