Home / 9,165.87-12,646.80-5,186.12

Finding the Fourth Proportional to 9,165.87, 12,646.80 and 5,186.12

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Solution

The fourth proportional to 9,165.87, 12,646.80 and 5,186.12 is: 7,155.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,165.87 : 12,646.80 = 5,186.12 : x
  2. Step 2: Convert to fraction form
    9,165.87/12,646.80 = 5,186.12/x
  3. Step 3: Cross multiply
    9,165.87x = 12,646.80 × 5,186.12
  4. Step 4: Simplify right side
    9,165.87x = 65,587,759.18
  5. Step 5: Solve for x
    x = 65,587,759.18/9,165.87
  6. Step 6: Final answer
    x = 7,155.65

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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.