Home / 7,135.24-9,849.36-6,387.88

Finding the Fourth Proportional to 7,135.24, 9,849.36 and 6,387.88

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Solution

The fourth proportional to 7,135.24, 9,849.36 and 6,387.88 is: 8,817.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,135.24 : 9,849.36 = 6,387.88 : x
  2. Step 2: Convert to fraction form
    7,135.24/9,849.36 = 6,387.88/x
  3. Step 3: Cross multiply
    7,135.24x = 9,849.36 × 6,387.88
  4. Step 4: Simplify right side
    7,135.24x = 62,916,529.76
  5. Step 5: Solve for x
    x = 62,916,529.76/7,135.24
  6. Step 6: Final answer
    x = 8,817.72

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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.