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Finding the Fourth Proportional to 5,871.40, 8,807.10 and 5,612.20

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Solution

The fourth proportional to 5,871.40, 8,807.10 and 5,612.20 is: 8,418.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.40 : 8,807.10 = 5,612.20 : x
  2. Step 2: Convert to fraction form
    5,871.40/8,807.10 = 5,612.20/x
  3. Step 3: Cross multiply
    5,871.40x = 8,807.10 × 5,612.20
  4. Step 4: Simplify right side
    5,871.40x = 49,427,206.62
  5. Step 5: Solve for x
    x = 49,427,206.62/5,871.40
  6. Step 6: Final answer
    x = 8,418.30

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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.