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Finding the Fourth Proportional to 6,459.64, 9,689.46 and 4,515.64

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Solution

The fourth proportional to 6,459.64, 9,689.46 and 4,515.64 is: 6,773.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,459.64 : 9,689.46 = 4,515.64 : x
  2. Step 2: Convert to fraction form
    6,459.64/9,689.46 = 4,515.64/x
  3. Step 3: Cross multiply
    6,459.64x = 9,689.46 × 4,515.64
  4. Step 4: Simplify right side
    6,459.64x = 43,754,113.15
  5. Step 5: Solve for x
    x = 43,754,113.15/6,459.64
  6. Step 6: Final answer
    x = 6,773.46

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Similar ratio
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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.