Home / 2,077.50-3,116.25-1,211.20

Finding the Fourth Proportional to 2,077.50, 3,116.25 and 1,211.20

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Solution

The fourth proportional to 2,077.50, 3,116.25 and 1,211.20 is: 1,816.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,077.50 : 3,116.25 = 1,211.20 : x
  2. Step 2: Convert to fraction form
    2,077.50/3,116.25 = 1,211.20/x
  3. Step 3: Cross multiply
    2,077.50x = 3,116.25 × 1,211.20
  4. Step 4: Simplify right side
    2,077.50x = 3,774,408.33
  5. Step 5: Solve for x
    x = 3,774,408.33/2,077.50
  6. Step 6: Final answer
    x = 1,816.80

Related Problems

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Half scale
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Double scale
Find fourth proportional to 2,078.50, 3,117.75 and 1,212.20
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.