Home / 1,131.02-1,561.70-753.27

Finding the Fourth Proportional to 1,131.02, 1,561.70 and 753.27

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Solution

The fourth proportional to 1,131.02, 1,561.70 and 753.27 is: 1,040.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,131.02 : 1,561.70 = 753.27 : x
  2. Step 2: Convert to fraction form
    1,131.02/1,561.70 = 753.27/x
  3. Step 3: Cross multiply
    1,131.02x = 1,561.70 × 753.27
  4. Step 4: Simplify right side
    1,131.02x = 1,176,377.99
  5. Step 5: Solve for x
    x = 1,176,377.99/1,131.02
  6. Step 6: Final answer
    x = 1,040.11

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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.