Home / 9,379.14-12,943.20-5,187.36

Finding the Fourth Proportional to 9,379.14, 12,943.20 and 5,187.36

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Solution

The fourth proportional to 9,379.14, 12,943.20 and 5,187.36 is: 7,158.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,379.14 : 12,943.20 = 5,187.36 : x
  2. Step 2: Convert to fraction form
    9,379.14/12,943.20 = 5,187.36/x
  3. Step 3: Cross multiply
    9,379.14x = 12,943.20 × 5,187.36
  4. Step 4: Simplify right side
    9,379.14x = 67,141,037.95
  5. Step 5: Solve for x
    x = 67,141,037.95/9,379.14
  6. Step 6: Final answer
    x = 7,158.55

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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.