Home / 1,759.68-2,428.65-1,131.12

Finding the Fourth Proportional to 1,759.68, 2,428.65 and 1,131.12

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Solution

The fourth proportional to 1,759.68, 2,428.65 and 1,131.12 is: 1,561.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,759.68 : 2,428.65 = 1,131.12 : x
  2. Step 2: Convert to fraction form
    1,759.68/2,428.65 = 1,131.12/x
  3. Step 3: Cross multiply
    1,759.68x = 2,428.65 × 1,131.12
  4. Step 4: Simplify right side
    1,759.68x = 2,747,094.59
  5. Step 5: Solve for x
    x = 2,747,094.59/1,759.68
  6. Step 6: Final answer
    x = 1,561.13

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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.