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Finding the Fourth Proportional to 8,867.95, 12,237.85 and 4,889.20

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Solution

The fourth proportional to 8,867.95, 12,237.85 and 4,889.20 is: 6,747.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,867.95 : 12,237.85 = 4,889.20 : x
  2. Step 2: Convert to fraction form
    8,867.95/12,237.85 = 4,889.20/x
  3. Step 3: Cross multiply
    8,867.95x = 12,237.85 × 4,889.20
  4. Step 4: Simplify right side
    8,867.95x = 59,833,339.04
  5. Step 5: Solve for x
    x = 59,833,339.04/8,867.95
  6. Step 6: Final answer
    x = 6,747.15

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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.