Home / 7,717.12-11,575.68-5,125.12

Finding the Fourth Proportional to 7,717.12, 11,575.68 and 5,125.12

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Solution

The fourth proportional to 7,717.12, 11,575.68 and 5,125.12 is: 7,687.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,717.12 : 11,575.68 = 5,125.12 : x
  2. Step 2: Convert to fraction form
    7,717.12/11,575.68 = 5,125.12/x
  3. Step 3: Cross multiply
    7,717.12x = 11,575.68 × 5,125.12
  4. Step 4: Simplify right side
    7,717.12x = 59,326,749.08
  5. Step 5: Solve for x
    x = 59,326,749.08/7,717.12
  6. Step 6: Final answer
    x = 7,687.68

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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.