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Finding the Fourth Proportional to 6,690.84, 9,244.85 and 6,454.32

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Solution

The fourth proportional to 6,690.84, 9,244.85 and 6,454.32 is: 8,918.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,690.84 : 9,244.85 = 6,454.32 : x
  2. Step 2: Convert to fraction form
    6,690.84/9,244.85 = 6,454.32/x
  3. Step 3: Cross multiply
    6,690.84x = 9,244.85 × 6,454.32
  4. Step 4: Simplify right side
    6,690.84x = 59,669,187.98
  5. Step 5: Solve for x
    x = 59,669,187.98/6,690.84
  6. Step 6: Final answer
    x = 8,918.04

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.