Home / 9,712.05-14,569.20-3,138.90

Finding the Fourth Proportional to 9,712.05, 14,569.20 and 3,138.90

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Solution

The fourth proportional to 9,712.05, 14,569.20 and 3,138.90 is: 4,708.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,712.05 : 14,569.20 = 3,138.90 : x
  2. Step 2: Convert to fraction form
    9,712.05/14,569.20 = 3,138.90/x
  3. Step 3: Cross multiply
    9,712.05x = 14,569.20 × 3,138.90
  4. Step 4: Simplify right side
    9,712.05x = 45,731,261.88
  5. Step 5: Solve for x
    x = 45,731,261.88/9,712.05
  6. Step 6: Final answer
    x = 4,708.71

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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.