Home / 2,650.32-3,975.52-702.80

Finding the Fourth Proportional to 2,650.32, 3,975.52 and 702.80

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Solution

The fourth proportional to 2,650.32, 3,975.52 and 702.80 is: 1,054.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,650.32 : 3,975.52 = 702.80 : x
  2. Step 2: Convert to fraction form
    2,650.32/3,975.52 = 702.80/x
  3. Step 3: Cross multiply
    2,650.32x = 3,975.52 × 702.80
  4. Step 4: Simplify right side
    2,650.32x = 2,793,995.46
  5. Step 5: Solve for x
    x = 2,793,995.46/2,650.32
  6. Step 6: Final answer
    x = 1,054.21

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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.