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Finding the Fourth Proportional to 6,445.30, 9,655.80 and 3,314.65

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Solution

The fourth proportional to 6,445.30, 9,655.80 and 3,314.65 is: 4,965.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,445.30 : 9,655.80 = 3,314.65 : x
  2. Step 2: Convert to fraction form
    6,445.30/9,655.80 = 3,314.65/x
  3. Step 3: Cross multiply
    6,445.30x = 9,655.80 × 3,314.65
  4. Step 4: Simplify right side
    6,445.30x = 32,005,597.47
  5. Step 5: Solve for x
    x = 32,005,597.47/6,445.30
  6. Step 6: Final answer
    x = 4,965.73

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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.