Home / 1,126.49-1,681.39-1,057.23

Finding the Fourth Proportional to 1,126.49, 1,681.39 and 1,057.23

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Solution

The fourth proportional to 1,126.49, 1,681.39 and 1,057.23 is: 1,578.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,126.49 : 1,681.39 = 1,057.23 : x
  2. Step 2: Convert to fraction form
    1,126.49/1,681.39 = 1,057.23/x
  3. Step 3: Cross multiply
    1,126.49x = 1,681.39 × 1,057.23
  4. Step 4: Simplify right side
    1,126.49x = 1,777,617.27
  5. Step 5: Solve for x
    x = 1,777,617.27/1,126.49
  6. Step 6: Final answer
    x = 1,578.02

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.