Home / 9,122.50-12,589.08-4,930.75

Finding the Fourth Proportional to 9,122.50, 12,589.08 and 4,930.75

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Solution

The fourth proportional to 9,122.50, 12,589.08 and 4,930.75 is: 6,804.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.50 : 12,589.08 = 4,930.75 : x
  2. Step 2: Convert to fraction form
    9,122.50/12,589.08 = 4,930.75/x
  3. Step 3: Cross multiply
    9,122.50x = 12,589.08 × 4,930.75
  4. Step 4: Simplify right side
    9,122.50x = 62,073,606.21
  5. Step 5: Solve for x
    x = 62,073,606.21/9,122.50
  6. Step 6: Final answer
    x = 6,804.45

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Half scale
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Double scale
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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.