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Finding the Fourth Proportional to 8,720.11, 12,033.81 and 4,741.30

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Solution

The fourth proportional to 8,720.11, 12,033.81 and 4,741.30 is: 6,543.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.11 : 12,033.81 = 4,741.30 : x
  2. Step 2: Convert to fraction form
    8,720.11/12,033.81 = 4,741.30/x
  3. Step 3: Cross multiply
    8,720.11x = 12,033.81 × 4,741.30
  4. Step 4: Simplify right side
    8,720.11x = 57,055,903.35
  5. Step 5: Solve for x
    x = 57,055,903.35/8,720.11
  6. Step 6: Final answer
    x = 6,543.03

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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.