Home / 7,691.40-10,614.92-4,709.21

Finding the Fourth Proportional to 7,691.40, 10,614.92 and 4,709.21

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Solution

The fourth proportional to 7,691.40, 10,614.92 and 4,709.21 is: 6,499.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,691.40 : 10,614.92 = 4,709.21 : x
  2. Step 2: Convert to fraction form
    7,691.40/10,614.92 = 4,709.21/x
  3. Step 3: Cross multiply
    7,691.40x = 10,614.92 × 4,709.21
  4. Step 4: Simplify right side
    7,691.40x = 49,987,925.72
  5. Step 5: Solve for x
    x = 49,987,925.72/7,691.40
  6. Step 6: Final answer
    x = 6,499.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.