Home / 7,499.20-11,248.80-7,134.70

Finding the Fourth Proportional to 7,499.20, 11,248.80 and 7,134.70

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Solution

The fourth proportional to 7,499.20, 11,248.80 and 7,134.70 is: 10,702.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,499.20 : 11,248.80 = 7,134.70 : x
  2. Step 2: Convert to fraction form
    7,499.20/11,248.80 = 7,134.70/x
  3. Step 3: Cross multiply
    7,499.20x = 11,248.80 × 7,134.70
  4. Step 4: Simplify right side
    7,499.20x = 80,256,813.36
  5. Step 5: Solve for x
    x = 80,256,813.36/7,499.20
  6. Step 6: Final answer
    x = 10,702.05

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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.