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Finding the Fourth Proportional to 5,074.85, 7,612.28 and 1,787.16

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Solution

The fourth proportional to 5,074.85, 7,612.28 and 1,787.16 is: 2,680.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,074.85 : 7,612.28 = 1,787.16 : x
  2. Step 2: Convert to fraction form
    5,074.85/7,612.28 = 1,787.16/x
  3. Step 3: Cross multiply
    5,074.85x = 7,612.28 × 1,787.16
  4. Step 4: Simplify right side
    5,074.85x = 13,604,388.64
  5. Step 5: Solve for x
    x = 13,604,388.64/5,074.85
  6. Step 6: Final answer
    x = 2,680.75

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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.