Home / 1,686.39-2,328.24-1,057.86

Finding the Fourth Proportional to 1,686.39, 2,328.24 and 1,057.86

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Solution

The fourth proportional to 1,686.39, 2,328.24 and 1,057.86 is: 1,460.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.39 : 2,328.24 = 1,057.86 : x
  2. Step 2: Convert to fraction form
    1,686.39/2,328.24 = 1,057.86/x
  3. Step 3: Cross multiply
    1,686.39x = 2,328.24 × 1,057.86
  4. Step 4: Simplify right side
    1,686.39x = 2,462,951.97
  5. Step 5: Solve for x
    x = 2,462,951.97/1,686.39
  6. Step 6: Final answer
    x = 1,460.49

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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.