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Finding the Fourth Proportional to 3,358.71, 5,038.11 and 1,278.72

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Solution

The fourth proportional to 3,358.71, 5,038.11 and 1,278.72 is: 1,918.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,358.71 : 5,038.11 = 1,278.72 : x
  2. Step 2: Convert to fraction form
    3,358.71/5,038.11 = 1,278.72/x
  3. Step 3: Cross multiply
    3,358.71x = 5,038.11 × 1,278.72
  4. Step 4: Simplify right side
    3,358.71x = 6,442,332.02
  5. Step 5: Solve for x
    x = 6,442,332.02/3,358.71
  6. Step 6: Final answer
    x = 1,918.10

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