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Finding the Fourth Proportional to 8,720.34, 12,033.95 and 4,741.49

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Solution

The fourth proportional to 8,720.34, 12,033.95 and 4,741.49 is: 6,543.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.34 : 12,033.95 = 4,741.49 : x
  2. Step 2: Convert to fraction form
    8,720.34/12,033.95 = 4,741.49/x
  3. Step 3: Cross multiply
    8,720.34x = 12,033.95 × 4,741.49
  4. Step 4: Simplify right side
    8,720.34x = 57,058,769.71
  5. Step 5: Solve for x
    x = 57,058,769.71/8,720.34
  6. Step 6: Final answer
    x = 6,543.18

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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.