Home / 9,138.47-12,608.43-5,738.29

Finding the Fourth Proportional to 9,138.47, 12,608.43 and 5,738.29

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Solution

The fourth proportional to 9,138.47, 12,608.43 and 5,738.29 is: 7,917.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,138.47 : 12,608.43 = 5,738.29 : x
  2. Step 2: Convert to fraction form
    9,138.47/12,608.43 = 5,738.29/x
  3. Step 3: Cross multiply
    9,138.47x = 12,608.43 × 5,738.29
  4. Step 4: Simplify right side
    9,138.47x = 72,350,894.08
  5. Step 5: Solve for x
    x = 72,350,894.08/9,138.47
  6. Step 6: Final answer
    x = 7,917.18

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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.