Home / 5,225.04-7,211.16-3,128.76

Finding the Fourth Proportional to 5,225.04, 7,211.16 and 3,128.76

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Solution

The fourth proportional to 5,225.04, 7,211.16 and 3,128.76 is: 4,318.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,225.04 : 7,211.16 = 3,128.76 : x
  2. Step 2: Convert to fraction form
    5,225.04/7,211.16 = 3,128.76/x
  3. Step 3: Cross multiply
    5,225.04x = 7,211.16 × 3,128.76
  4. Step 4: Simplify right side
    5,225.04x = 22,561,988.96
  5. Step 5: Solve for x
    x = 22,561,988.96/5,225.04
  6. Step 6: Final answer
    x = 4,318.05

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Half scale
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Double scale
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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.