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Finding the Fourth Proportional to 8,720.08, 12,033.75 and 4,741.21

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Solution

The fourth proportional to 8,720.08, 12,033.75 and 4,741.21 is: 6,542.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,720.08 : 12,033.75 = 4,741.21 : x
  2. Step 2: Convert to fraction form
    8,720.08/12,033.75 = 4,741.21/x
  3. Step 3: Cross multiply
    8,720.08x = 12,033.75 × 4,741.21
  4. Step 4: Simplify right side
    8,720.08x = 57,054,535.84
  5. Step 5: Solve for x
    x = 57,054,535.84/8,720.08
  6. Step 6: Final answer
    x = 6,542.89

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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.