Home / 1,708.11-2,355.10-1,392.48

Finding the Fourth Proportional to 1,708.11, 2,355.10 and 1,392.48

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Solution

The fourth proportional to 1,708.11, 2,355.10 and 1,392.48 is: 1,919.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,708.11 : 2,355.10 = 1,392.48 : x
  2. Step 2: Convert to fraction form
    1,708.11/2,355.10 = 1,392.48/x
  3. Step 3: Cross multiply
    1,708.11x = 2,355.10 × 1,392.48
  4. Step 4: Simplify right side
    1,708.11x = 3,279,426.17
  5. Step 5: Solve for x
    x = 3,279,426.17/1,708.11
  6. Step 6: Final answer
    x = 1,919.92

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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.