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Finding the Fourth Proportional to 6,484.79, 8,985.15 and 6,344.66

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Solution

The fourth proportional to 6,484.79, 8,985.15 and 6,344.66 is: 8,790.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,484.79 : 8,985.15 = 6,344.66 : x
  2. Step 2: Convert to fraction form
    6,484.79/8,985.15 = 6,344.66/x
  3. Step 3: Cross multiply
    6,484.79x = 8,985.15 × 6,344.66
  4. Step 4: Simplify right side
    6,484.79x = 57,007,645.15
  5. Step 5: Solve for x
    x = 57,007,645.15/6,484.79
  6. Step 6: Final answer
    x = 8,790.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.