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Finding the Fourth Proportional to 9,487.11, 13,080.04 and 7,779.32

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Solution

The fourth proportional to 9,487.11, 13,080.04 and 7,779.32 is: 10,725.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,487.11 : 13,080.04 = 7,779.32 : x
  2. Step 2: Convert to fraction form
    9,487.11/13,080.04 = 7,779.32/x
  3. Step 3: Cross multiply
    9,487.11x = 13,080.04 × 7,779.32
  4. Step 4: Simplify right side
    9,487.11x = 101,753,859.20
  5. Step 5: Solve for x
    x = 101,753,859.20/9,487.11
  6. Step 6: Final answer
    x = 10,725.49

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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.