Home / 3,130.75-4,321.15-1,951.59

Finding the Fourth Proportional to 3,130.75, 4,321.15 and 1,951.59

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Solution

The fourth proportional to 3,130.75, 4,321.15 and 1,951.59 is: 2,693.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.75 : 4,321.15 = 1,951.59 : x
  2. Step 2: Convert to fraction form
    3,130.75/4,321.15 = 1,951.59/x
  3. Step 3: Cross multiply
    3,130.75x = 4,321.15 × 1,951.59
  4. Step 4: Simplify right side
    3,130.75x = 8,433,124.45
  5. Step 5: Solve for x
    x = 8,433,124.45/3,130.75
  6. Step 6: Final answer
    x = 2,693.64

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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.