Home / 6,312.46-8,719.40-5,121.86

Finding the Fourth Proportional to 6,312.46, 8,719.40 and 5,121.86

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Solution

The fourth proportional to 6,312.46, 8,719.40 and 5,121.86 is: 7,074.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,312.46 : 8,719.40 = 5,121.86 : x
  2. Step 2: Convert to fraction form
    6,312.46/8,719.40 = 5,121.86/x
  3. Step 3: Cross multiply
    6,312.46x = 8,719.40 × 5,121.86
  4. Step 4: Simplify right side
    6,312.46x = 44,659,546.08
  5. Step 5: Solve for x
    x = 44,659,546.08/6,312.46
  6. Step 6: Final answer
    x = 7,074.82

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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.