Home / 7,928.47-11,898.47-6,387.09

Finding the Fourth Proportional to 7,928.47, 11,898.47 and 6,387.09

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Solution

The fourth proportional to 7,928.47, 11,898.47 and 6,387.09 is: 9,585.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,928.47 : 11,898.47 = 6,387.09 : x
  2. Step 2: Convert to fraction form
    7,928.47/11,898.47 = 6,387.09/x
  3. Step 3: Cross multiply
    7,928.47x = 11,898.47 × 6,387.09
  4. Step 4: Simplify right side
    7,928.47x = 75,996,552.14
  5. Step 5: Solve for x
    x = 75,996,552.14/7,928.47
  6. Step 6: Final answer
    x = 9,585.28

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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.