Home / 8,319.97-12,482.39-3,126.25

Finding the Fourth Proportional to 8,319.97, 12,482.39 and 3,126.25

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Solution

The fourth proportional to 8,319.97, 12,482.39 and 3,126.25 is: 4,690.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.97 : 12,482.39 = 3,126.25 : x
  2. Step 2: Convert to fraction form
    8,319.97/12,482.39 = 3,126.25/x
  3. Step 3: Cross multiply
    8,319.97x = 12,482.39 × 3,126.25
  4. Step 4: Simplify right side
    8,319.97x = 39,023,071.74
  5. Step 5: Solve for x
    x = 39,023,071.74/8,319.97
  6. Step 6: Final answer
    x = 4,690.29

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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.