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Finding the Fourth Proportional to 9,359.19, 12,909.92 and 5,579.93

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Solution

The fourth proportional to 9,359.19, 12,909.92 and 5,579.93 is: 7,696.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,359.19 : 12,909.92 = 5,579.93 : x
  2. Step 2: Convert to fraction form
    9,359.19/12,909.92 = 5,579.93/x
  3. Step 3: Cross multiply
    9,359.19x = 12,909.92 × 5,579.93
  4. Step 4: Simplify right side
    9,359.19x = 72,036,454.28
  5. Step 5: Solve for x
    x = 72,036,454.28/9,359.19
  6. Step 6: Final answer
    x = 7,696.87

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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.