Home / 8,867.16-12,234.72-5,139

Finding the Fourth Proportional to 8,867.16, 12,234.72 and 5,139

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Solution

The fourth proportional to 8,867.16, 12,234.72 and 5,139 is: 7,090.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.16 : 12,234.72 = 5,139 : x
  2. Step 2: Convert to fraction form
    8,867.16/12,234.72 = 5,139/x
  3. Step 3: Cross multiply
    8,867.16x = 12,234.72 × 5,139
  4. Step 4: Simplify right side
    8,867.16x = 62,874,226.08
  5. Step 5: Solve for x
    x = 62,874,226.08/8,867.16
  6. Step 6: Final answer
    x = 7,090.68

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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.