Home / 1,561.24-2,153.78-1,001.52

Finding the Fourth Proportional to 1,561.24, 2,153.78 and 1,001.52

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Solution

The fourth proportional to 1,561.24, 2,153.78 and 1,001.52 is: 1,381.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,561.24 : 2,153.78 = 1,001.52 : x
  2. Step 2: Convert to fraction form
    1,561.24/2,153.78 = 1,001.52/x
  3. Step 3: Cross multiply
    1,561.24x = 2,153.78 × 1,001.52
  4. Step 4: Simplify right side
    1,561.24x = 2,157,053.75
  5. Step 5: Solve for x
    x = 2,157,053.75/1,561.24
  6. Step 6: Final answer
    x = 1,381.63

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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.