Home / 7,143.12-10,731.15-6,847.88

Finding the Fourth Proportional to 7,143.12, 10,731.15 and 6,847.88

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Solution

The fourth proportional to 7,143.12, 10,731.15 and 6,847.88 is: 10,287.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,143.12 : 10,731.15 = 6,847.88 : x
  2. Step 2: Convert to fraction form
    7,143.12/10,731.15 = 6,847.88/x
  3. Step 3: Cross multiply
    7,143.12x = 10,731.15 × 6,847.88
  4. Step 4: Simplify right side
    7,143.12x = 73,485,573.81
  5. Step 5: Solve for x
    x = 73,485,573.81/7,143.12
  6. Step 6: Final answer
    x = 10,287.60

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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.