Home / 9,122.54-12,589.10-4,930.79

Finding the Fourth Proportional to 9,122.54, 12,589.10 and 4,930.79

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Solution

The fourth proportional to 9,122.54, 12,589.10 and 4,930.79 is: 6,804.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.54 : 12,589.10 = 4,930.79 : x
  2. Step 2: Convert to fraction form
    9,122.54/12,589.10 = 4,930.79/x
  3. Step 3: Cross multiply
    9,122.54x = 12,589.10 × 4,930.79
  4. Step 4: Simplify right side
    9,122.54x = 62,074,120.79
  5. Step 5: Solve for x
    x = 62,074,120.79/9,122.54
  6. Step 6: Final answer
    x = 6,804.48

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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.