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Finding the Fourth Proportional to 7,701.20, 11,526.20 and 5,397.20

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Solution

The fourth proportional to 7,701.20, 11,526.20 and 5,397.20 is: 8,077.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,701.20 : 11,526.20 = 5,397.20 : x
  2. Step 2: Convert to fraction form
    7,701.20/11,526.20 = 5,397.20/x
  3. Step 3: Cross multiply
    7,701.20x = 11,526.20 × 5,397.20
  4. Step 4: Simplify right side
    7,701.20x = 62,209,206.64
  5. Step 5: Solve for x
    x = 62,209,206.64/7,701.20
  6. Step 6: Final answer
    x = 8,077.86

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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.