Home / 1,542.10-2,124.93-1,191.70

Finding the Fourth Proportional to 1,542.10, 2,124.93 and 1,191.70

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Solution

The fourth proportional to 1,542.10, 2,124.93 and 1,191.70 is: 1,642.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,542.10 : 2,124.93 = 1,191.70 : x
  2. Step 2: Convert to fraction form
    1,542.10/2,124.93 = 1,191.70/x
  3. Step 3: Cross multiply
    1,542.10x = 2,124.93 × 1,191.70
  4. Step 4: Simplify right side
    1,542.10x = 2,532,279.08
  5. Step 5: Solve for x
    x = 2,532,279.08/1,542.10
  6. Step 6: Final answer
    x = 1,642.10

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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.