Home / 1,551.78-2,143.29-1,195.17

Finding the Fourth Proportional to 1,551.78, 2,143.29 and 1,195.17

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Solution

The fourth proportional to 1,551.78, 2,143.29 and 1,195.17 is: 1,650.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.78 : 2,143.29 = 1,195.17 : x
  2. Step 2: Convert to fraction form
    1,551.78/2,143.29 = 1,195.17/x
  3. Step 3: Cross multiply
    1,551.78x = 2,143.29 × 1,195.17
  4. Step 4: Simplify right side
    1,551.78x = 2,561,595.91
  5. Step 5: Solve for x
    x = 2,561,595.91/1,551.78
  6. Step 6: Final answer
    x = 1,650.75

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1.5x scale

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.