Home / 1,432.90-2,149.35-1,378.23

Finding the Fourth Proportional to 1,432.90, 2,149.35 and 1,378.23

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Solution

The fourth proportional to 1,432.90, 2,149.35 and 1,378.23 is: 2,067.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,432.90 : 2,149.35 = 1,378.23 : x
  2. Step 2: Convert to fraction form
    1,432.90/2,149.35 = 1,378.23/x
  3. Step 3: Cross multiply
    1,432.90x = 2,149.35 × 1,378.23
  4. Step 4: Simplify right side
    1,432.90x = 2,962,298.65
  5. Step 5: Solve for x
    x = 2,962,298.65/1,432.90
  6. Step 6: Final answer
    x = 2,067.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.