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Finding the Fourth Proportional to 8,743.16, 12,061.08 and 5,720.03

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Solution

The fourth proportional to 8,743.16, 12,061.08 and 5,720.03 is: 7,890.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,743.16 : 12,061.08 = 5,720.03 : x
  2. Step 2: Convert to fraction form
    8,743.16/12,061.08 = 5,720.03/x
  3. Step 3: Cross multiply
    8,743.16x = 12,061.08 × 5,720.03
  4. Step 4: Simplify right side
    8,743.16x = 68,989,725.23
  5. Step 5: Solve for x
    x = 68,989,725.23/8,743.16
  6. Step 6: Final answer
    x = 7,890.71

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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.