Home / 1,948.72-2,684.68-1,358.24

Finding the Fourth Proportional to 1,948.72, 2,684.68 and 1,358.24

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Solution

The fourth proportional to 1,948.72, 2,684.68 and 1,358.24 is: 1,871.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.72 : 2,684.68 = 1,358.24 : x
  2. Step 2: Convert to fraction form
    1,948.72/2,684.68 = 1,358.24/x
  3. Step 3: Cross multiply
    1,948.72x = 2,684.68 × 1,358.24
  4. Step 4: Simplify right side
    1,948.72x = 3,646,439.76
  5. Step 5: Solve for x
    x = 3,646,439.76/1,948.72
  6. Step 6: Final answer
    x = 1,871.20

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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.