Home / 7,511.76-11,265.28-3,128.08

Finding the Fourth Proportional to 7,511.76, 11,265.28 and 3,128.08

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Solution

The fourth proportional to 7,511.76, 11,265.28 and 3,128.08 is: 4,691.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,511.76 : 11,265.28 = 3,128.08 : x
  2. Step 2: Convert to fraction form
    7,511.76/11,265.28 = 3,128.08/x
  3. Step 3: Cross multiply
    7,511.76x = 11,265.28 × 3,128.08
  4. Step 4: Simplify right side
    7,511.76x = 35,238,697.06
  5. Step 5: Solve for x
    x = 35,238,697.06/7,511.76
  6. Step 6: Final answer
    x = 4,691.14

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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.