Home / 3,130.68-4,320.36-1,951.68

Finding the Fourth Proportional to 3,130.68, 4,320.36 and 1,951.68

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Solution

The fourth proportional to 3,130.68, 4,320.36 and 1,951.68 is: 2,693.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,130.68 : 4,320.36 = 1,951.68 : x
  2. Step 2: Convert to fraction form
    3,130.68/4,320.36 = 1,951.68/x
  3. Step 3: Cross multiply
    3,130.68x = 4,320.36 × 1,951.68
  4. Step 4: Simplify right side
    3,130.68x = 8,431,960.20
  5. Step 5: Solve for x
    x = 8,431,960.20/3,130.68
  6. Step 6: Final answer
    x = 2,693.33

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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.