Home / 1,542.77-2,130.80-1,124.99

Finding the Fourth Proportional to 1,542.77, 2,130.80 and 1,124.99

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Solution

The fourth proportional to 1,542.77, 2,130.80 and 1,124.99 is: 1,553.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.77 : 2,130.80 = 1,124.99 : x
  2. Step 2: Convert to fraction form
    1,542.77/2,130.80 = 1,124.99/x
  3. Step 3: Cross multiply
    1,542.77x = 2,130.80 × 1,124.99
  4. Step 4: Simplify right side
    1,542.77x = 2,397,112.41
  5. Step 5: Solve for x
    x = 2,397,112.41/1,542.77
  6. Step 6: Final answer
    x = 1,553.78

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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.