Home / 8,436.64-11,641.56-5,079.40

Finding the Fourth Proportional to 8,436.64, 11,641.56 and 5,079.40

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Solution

The fourth proportional to 8,436.64, 11,641.56 and 5,079.40 is: 7,008.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,436.64 : 11,641.56 = 5,079.40 : x
  2. Step 2: Convert to fraction form
    8,436.64/11,641.56 = 5,079.40/x
  3. Step 3: Cross multiply
    8,436.64x = 11,641.56 × 5,079.40
  4. Step 4: Simplify right side
    8,436.64x = 59,132,139.86
  5. Step 5: Solve for x
    x = 59,132,139.86/8,436.64
  6. Step 6: Final answer
    x = 7,008.97

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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.