Home / 1,686.38-2,530.87-1,101.22

Finding the Fourth Proportional to 1,686.38, 2,530.87 and 1,101.22

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Solution

The fourth proportional to 1,686.38, 2,530.87 and 1,101.22 is: 1,652.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,686.38 : 2,530.87 = 1,101.22 : x
  2. Step 2: Convert to fraction form
    1,686.38/2,530.87 = 1,101.22/x
  3. Step 3: Cross multiply
    1,686.38x = 2,530.87 × 1,101.22
  4. Step 4: Simplify right side
    1,686.38x = 2,787,038.26
  5. Step 5: Solve for x
    x = 2,787,038.26/1,686.38
  6. Step 6: Final answer
    x = 1,652.68

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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.