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Finding the Fourth Proportional to 10,399.91, 15,599.93 and 2,608.70

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Solution

The fourth proportional to 10,399.91, 15,599.93 and 2,608.70 is: 3,913.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,399.91 : 15,599.93 = 2,608.70 : x
  2. Step 2: Convert to fraction form
    10,399.91/15,599.93 = 2,608.70/x
  3. Step 3: Cross multiply
    10,399.91x = 15,599.93 × 2,608.70
  4. Step 4: Simplify right side
    10,399.91x = 40,695,446.35
  5. Step 5: Solve for x
    x = 40,695,446.35/10,399.91
  6. Step 6: Final answer
    x = 3,913.06

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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.