Home / 1,542.78-2,131.85-1,169.10

Finding the Fourth Proportional to 1,542.78, 2,131.85 and 1,169.10

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Solution

The fourth proportional to 1,542.78, 2,131.85 and 1,169.10 is: 1,615.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.78 : 2,131.85 = 1,169.10 : x
  2. Step 2: Convert to fraction form
    1,542.78/2,131.85 = 1,169.10/x
  3. Step 3: Cross multiply
    1,542.78x = 2,131.85 × 1,169.10
  4. Step 4: Simplify right side
    1,542.78x = 2,492,348.76
  5. Step 5: Solve for x
    x = 2,492,348.76/1,542.78
  6. Step 6: Final answer
    x = 1,615.49

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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.