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Finding the Fourth Proportional to 6,455.96, 8,851.20 and 6,339.32

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Solution

The fourth proportional to 6,455.96, 8,851.20 and 6,339.32 is: 8,691.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,455.96 : 8,851.20 = 6,339.32 : x
  2. Step 2: Convert to fraction form
    6,455.96/8,851.20 = 6,339.32/x
  3. Step 3: Cross multiply
    6,455.96x = 8,851.20 × 6,339.32
  4. Step 4: Simplify right side
    6,455.96x = 56,110,521.16
  5. Step 5: Solve for x
    x = 56,110,521.16/6,455.96
  6. Step 6: Final answer
    x = 8,691.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.