Home / 1,551.64-2,139.42-1,079.56

Finding the Fourth Proportional to 1,551.64, 2,139.42 and 1,079.56

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Solution

The fourth proportional to 1,551.64, 2,139.42 and 1,079.56 is: 1,488.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,551.64 : 2,139.42 = 1,079.56 : x
  2. Step 2: Convert to fraction form
    1,551.64/2,139.42 = 1,079.56/x
  3. Step 3: Cross multiply
    1,551.64x = 2,139.42 × 1,079.56
  4. Step 4: Simplify right side
    1,551.64x = 2,309,632.26
  5. Step 5: Solve for x
    x = 2,309,632.26/1,551.64
  6. Step 6: Final answer
    x = 1,488.51

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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.