Home / 1,542.55-2,126.76-1,122.56

Finding the Fourth Proportional to 1,542.55, 2,126.76 and 1,122.56

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Solution

The fourth proportional to 1,542.55, 2,126.76 and 1,122.56 is: 1,547.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.55 : 2,126.76 = 1,122.56 : x
  2. Step 2: Convert to fraction form
    1,542.55/2,126.76 = 1,122.56/x
  3. Step 3: Cross multiply
    1,542.55x = 2,126.76 × 1,122.56
  4. Step 4: Simplify right side
    1,542.55x = 2,387,415.71
  5. Step 5: Solve for x
    x = 2,387,415.71/1,542.55
  6. Step 6: Final answer
    x = 1,547.71

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1.5x scale

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.