Home / 1,683.08-2,519.34-1,126.70

Finding the Fourth Proportional to 1,683.08, 2,519.34 and 1,126.70

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Solution

The fourth proportional to 1,683.08, 2,519.34 and 1,126.70 is: 1,686.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,683.08 : 2,519.34 = 1,126.70 : x
  2. Step 2: Convert to fraction form
    1,683.08/2,519.34 = 1,126.70/x
  3. Step 3: Cross multiply
    1,683.08x = 2,519.34 × 1,126.70
  4. Step 4: Simplify right side
    1,683.08x = 2,838,540.38
  5. Step 5: Solve for x
    x = 2,838,540.38/1,683.08
  6. Step 6: Final answer
    x = 1,686.52

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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.