Home / 8,251.31-12,380.97-5,130.51

Finding the Fourth Proportional to 8,251.31, 12,380.97 and 5,130.51

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Solution

The fourth proportional to 8,251.31, 12,380.97 and 5,130.51 is: 7,698.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,251.31 : 12,380.97 = 5,130.51 : x
  2. Step 2: Convert to fraction form
    8,251.31/12,380.97 = 5,130.51/x
  3. Step 3: Cross multiply
    8,251.31x = 12,380.97 × 5,130.51
  4. Step 4: Simplify right side
    8,251.31x = 63,520,690.39
  5. Step 5: Solve for x
    x = 63,520,690.39/8,251.31
  6. Step 6: Final answer
    x = 7,698.26

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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.