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Finding the Fourth Proportional to 1,607.90, 2,400.22 and 1,487.66

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Solution

The fourth proportional to 1,607.90, 2,400.22 and 1,487.66 is: 2,220.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,607.90 : 2,400.22 = 1,487.66 : x
  2. Step 2: Convert to fraction form
    1,607.90/2,400.22 = 1,487.66/x
  3. Step 3: Cross multiply
    1,607.90x = 2,400.22 × 1,487.66
  4. Step 4: Simplify right side
    1,607.90x = 3,570,711.29
  5. Step 5: Solve for x
    x = 3,570,711.29/1,607.90
  6. Step 6: Final answer
    x = 2,220.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.