Home / 5,665.40-8,498.10-3,915.80

Finding the Fourth Proportional to 5,665.40, 8,498.10 and 3,915.80

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Solution

The fourth proportional to 5,665.40, 8,498.10 and 3,915.80 is: 5,873.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,665.40 : 8,498.10 = 3,915.80 : x
  2. Step 2: Convert to fraction form
    5,665.40/8,498.10 = 3,915.80/x
  3. Step 3: Cross multiply
    5,665.40x = 8,498.10 × 3,915.80
  4. Step 4: Simplify right side
    5,665.40x = 33,276,859.98
  5. Step 5: Solve for x
    x = 33,276,859.98/5,665.40
  6. Step 6: Final answer
    x = 5,873.70

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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.