Home / 8,319.06-12,474.90-3,121.26

Finding the Fourth Proportional to 8,319.06, 12,474.90 and 3,121.26

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Solution

The fourth proportional to 8,319.06, 12,474.90 and 3,121.26 is: 4,680.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,319.06 : 12,474.90 = 3,121.26 : x
  2. Step 2: Convert to fraction form
    8,319.06/12,474.90 = 3,121.26/x
  3. Step 3: Cross multiply
    8,319.06x = 12,474.90 × 3,121.26
  4. Step 4: Simplify right side
    8,319.06x = 38,937,406.37
  5. Step 5: Solve for x
    x = 38,937,406.37/8,319.06
  6. Step 6: Final answer
    x = 4,680.51

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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.