Home / 9,121.68-12,589.14-5,346.34

Finding the Fourth Proportional to 9,121.68, 12,589.14 and 5,346.34

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Solution

The fourth proportional to 9,121.68, 12,589.14 and 5,346.34 is: 7,378.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,121.68 : 12,589.14 = 5,346.34 : x
  2. Step 2: Convert to fraction form
    9,121.68/12,589.14 = 5,346.34/x
  3. Step 3: Cross multiply
    9,121.68x = 12,589.14 × 5,346.34
  4. Step 4: Simplify right side
    9,121.68x = 67,305,781.25
  5. Step 5: Solve for x
    x = 67,305,781.25/9,121.68
  6. Step 6: Final answer
    x = 7,378.66

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Half scale
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Double scale
Find fourth proportional to 9,122.68, 12,590.52 and 5,347.34
Similar ratio
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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.