Home / 8,915.04-12,298.80-5,186.88

Finding the Fourth Proportional to 8,915.04, 12,298.80 and 5,186.88

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Solution

The fourth proportional to 8,915.04, 12,298.80 and 5,186.88 is: 7,155.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,915.04 : 12,298.80 = 5,186.88 : x
  2. Step 2: Convert to fraction form
    8,915.04/12,298.80 = 5,186.88/x
  3. Step 3: Cross multiply
    8,915.04x = 12,298.80 × 5,186.88
  4. Step 4: Simplify right side
    8,915.04x = 63,792,399.74
  5. Step 5: Solve for x
    x = 63,792,399.74/8,915.04
  6. Step 6: Final answer
    x = 7,155.59

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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.