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Finding the Fourth Proportional to 6,888.84, 9,489.72 and 4,994.85

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Solution

The fourth proportional to 6,888.84, 9,489.72 and 4,994.85 is: 6,880.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,888.84 : 9,489.72 = 4,994.85 : x
  2. Step 2: Convert to fraction form
    6,888.84/9,489.72 = 4,994.85/x
  3. Step 3: Cross multiply
    6,888.84x = 9,489.72 × 4,994.85
  4. Step 4: Simplify right side
    6,888.84x = 47,399,751.67
  5. Step 5: Solve for x
    x = 47,399,751.67/6,888.84
  6. Step 6: Final answer
    x = 6,880.66

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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.