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Finding the Fourth Proportional to 10,407.90, 15,605.33 and 4,400.90

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Solution

The fourth proportional to 10,407.90, 15,605.33 and 4,400.90 is: 6,598.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,407.90 : 15,605.33 = 4,400.90 : x
  2. Step 2: Convert to fraction form
    10,407.90/15,605.33 = 4,400.90/x
  3. Step 3: Cross multiply
    10,407.90x = 15,605.33 × 4,400.90
  4. Step 4: Simplify right side
    10,407.90x = 68,677,496.80
  5. Step 5: Solve for x
    x = 68,677,496.80/10,407.90
  6. Step 6: Final answer
    x = 6,598.59

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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.