Home / 1,559.72-2,153.28-1,139.66

Finding the Fourth Proportional to 1,559.72, 2,153.28 and 1,139.66

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Solution

The fourth proportional to 1,559.72, 2,153.28 and 1,139.66 is: 1,573.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,559.72 : 2,153.28 = 1,139.66 : x
  2. Step 2: Convert to fraction form
    1,559.72/2,153.28 = 1,139.66/x
  3. Step 3: Cross multiply
    1,559.72x = 2,153.28 × 1,139.66
  4. Step 4: Simplify right side
    1,559.72x = 2,454,007.08
  5. Step 5: Solve for x
    x = 2,454,007.08/1,559.72
  6. Step 6: Final answer
    x = 1,573.36

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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.