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Finding the Fourth Proportional to 8,713.53, 12,020.04 and 5,521.19

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Solution

The fourth proportional to 8,713.53, 12,020.04 and 5,521.19 is: 7,616.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,713.53 : 12,020.04 = 5,521.19 : x
  2. Step 2: Convert to fraction form
    8,713.53/12,020.04 = 5,521.19/x
  3. Step 3: Cross multiply
    8,713.53x = 12,020.04 × 5,521.19
  4. Step 4: Simplify right side
    8,713.53x = 66,364,864.55
  5. Step 5: Solve for x
    x = 66,364,864.55/8,713.53
  6. Step 6: Final answer
    x = 7,616.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.