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Finding the Fourth Proportional to 3,139.59, 4,332.62 and 1,723.28

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Solution

The fourth proportional to 3,139.59, 4,332.62 and 1,723.28 is: 2,378.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.59 : 4,332.62 = 1,723.28 : x
  2. Step 2: Convert to fraction form
    3,139.59/4,332.62 = 1,723.28/x
  3. Step 3: Cross multiply
    3,139.59x = 4,332.62 × 1,723.28
  4. Step 4: Simplify right side
    3,139.59x = 7,466,317.39
  5. Step 5: Solve for x
    x = 7,466,317.39/3,139.59
  6. Step 6: Final answer
    x = 2,378.12

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.