Home / 1,542.38-2,120.26-1,328.90

Finding the Fourth Proportional to 1,542.38, 2,120.26 and 1,328.90

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Solution

The fourth proportional to 1,542.38, 2,120.26 and 1,328.90 is: 1,826.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.38 : 2,120.26 = 1,328.90 : x
  2. Step 2: Convert to fraction form
    1,542.38/2,120.26 = 1,328.90/x
  3. Step 3: Cross multiply
    1,542.38x = 2,120.26 × 1,328.90
  4. Step 4: Simplify right side
    1,542.38x = 2,817,613.51
  5. Step 5: Solve for x
    x = 2,817,613.51/1,542.38
  6. Step 6: Final answer
    x = 1,826.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.