Home / 8,439.07-11,641.35-5,079.88

Finding the Fourth Proportional to 8,439.07, 11,641.35 and 5,079.88

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Solution

The fourth proportional to 8,439.07, 11,641.35 and 5,079.88 is: 7,007.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,439.07 : 11,641.35 = 5,079.88 : x
  2. Step 2: Convert to fraction form
    8,439.07/11,641.35 = 5,079.88/x
  3. Step 3: Cross multiply
    8,439.07x = 11,641.35 × 5,079.88
  4. Step 4: Simplify right side
    8,439.07x = 59,136,661.04
  5. Step 5: Solve for x
    x = 59,136,661.04/8,439.07
  6. Step 6: Final answer
    x = 7,007.49

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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.