Home / 9,158.78-13,738.02-2,918.71

Finding the Fourth Proportional to 9,158.78, 13,738.02 and 2,918.71

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Solution

The fourth proportional to 9,158.78, 13,738.02 and 2,918.71 is: 4,378.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,158.78 : 13,738.02 = 2,918.71 : x
  2. Step 2: Convert to fraction form
    9,158.78/13,738.02 = 2,918.71/x
  3. Step 3: Cross multiply
    9,158.78x = 13,738.02 × 2,918.71
  4. Step 4: Simplify right side
    9,158.78x = 40,097,324.47
  5. Step 5: Solve for x
    x = 40,097,324.47/9,158.78
  6. Step 6: Final answer
    x = 4,378.02

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.