Home / 10,400.39-15,600.59-2,609.21

Finding the Fourth Proportional to 10,400.39, 15,600.59 and 2,609.21

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Solution

The fourth proportional to 10,400.39, 15,600.59 and 2,609.21 is: 3,913.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,400.39 : 15,600.59 = 2,609.21 : x
  2. Step 2: Convert to fraction form
    10,400.39/15,600.59 = 2,609.21/x
  3. Step 3: Cross multiply
    10,400.39x = 15,600.59 × 2,609.21
  4. Step 4: Simplify right side
    10,400.39x = 40,705,124.38
  5. Step 5: Solve for x
    x = 40,705,124.38/10,400.39
  6. Step 6: Final answer
    x = 3,913.81

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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.