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Finding the Fourth Proportional to 8,901.69, 13,352.94 and 2,979.11

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Solution

The fourth proportional to 8,901.69, 13,352.94 and 2,979.11 is: 4,468.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,901.69 : 13,352.94 = 2,979.11 : x
  2. Step 2: Convert to fraction form
    8,901.69/13,352.94 = 2,979.11/x
  3. Step 3: Cross multiply
    8,901.69x = 13,352.94 × 2,979.11
  4. Step 4: Simplify right side
    8,901.69x = 39,779,810.32
  5. Step 5: Solve for x
    x = 39,779,810.32/8,901.69
  6. Step 6: Final answer
    x = 4,468.79

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.