Home / 8,988.16-12,398.40-5,261.44

Finding the Fourth Proportional to 8,988.16, 12,398.40 and 5,261.44

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Solution

The fourth proportional to 8,988.16, 12,398.40 and 5,261.44 is: 7,257.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,988.16 : 12,398.40 = 5,261.44 : x
  2. Step 2: Convert to fraction form
    8,988.16/12,398.40 = 5,261.44/x
  3. Step 3: Cross multiply
    8,988.16x = 12,398.40 × 5,261.44
  4. Step 4: Simplify right side
    8,988.16x = 65,233,437.70
  5. Step 5: Solve for x
    x = 65,233,437.70/8,988.16
  6. Step 6: Final answer
    x = 7,257.71

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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.