Home / 1,432.44-1,977.12-1,117.62

Finding the Fourth Proportional to 1,432.44, 1,977.12 and 1,117.62

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Solution

The fourth proportional to 1,432.44, 1,977.12 and 1,117.62 is: 1,542.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.44 : 1,977.12 = 1,117.62 : x
  2. Step 2: Convert to fraction form
    1,432.44/1,977.12 = 1,117.62/x
  3. Step 3: Cross multiply
    1,432.44x = 1,977.12 × 1,117.62
  4. Step 4: Simplify right side
    1,432.44x = 2,209,668.85
  5. Step 5: Solve for x
    x = 2,209,668.85/1,432.44
  6. Step 6: Final answer
    x = 1,542.59

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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.