Home / 8,477.28-12,760.20-7,672.32

Finding the Fourth Proportional to 8,477.28, 12,760.20 and 7,672.32

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Solution

The fourth proportional to 8,477.28, 12,760.20 and 7,672.32 is: 11,548.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,477.28 : 12,760.20 = 7,672.32 : x
  2. Step 2: Convert to fraction form
    8,477.28/12,760.20 = 7,672.32/x
  3. Step 3: Cross multiply
    8,477.28x = 12,760.20 × 7,672.32
  4. Step 4: Simplify right side
    8,477.28x = 97,900,337.66
  5. Step 5: Solve for x
    x = 97,900,337.66/8,477.28
  6. Step 6: Final answer
    x = 11,548.56

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.