Home / 9,122.93-12,589.71-5,346.20

Finding the Fourth Proportional to 9,122.93, 12,589.71 and 5,346.20

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Solution

The fourth proportional to 9,122.93, 12,589.71 and 5,346.20 is: 7,377.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,122.93 : 12,589.71 = 5,346.20 : x
  2. Step 2: Convert to fraction form
    9,122.93/12,589.71 = 5,346.20/x
  3. Step 3: Cross multiply
    9,122.93x = 12,589.71 × 5,346.20
  4. Step 4: Simplify right side
    9,122.93x = 67,307,044.65
  5. Step 5: Solve for x
    x = 67,307,044.65/9,122.93
  6. Step 6: Final answer
    x = 7,377.79

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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.