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Finding the Fourth Proportional to 6,689.81, 9,994.02 and 4,330.59

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Solution

The fourth proportional to 6,689.81, 9,994.02 and 4,330.59 is: 6,469.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,689.81 : 9,994.02 = 4,330.59 : x
  2. Step 2: Convert to fraction form
    6,689.81/9,994.02 = 4,330.59/x
  3. Step 3: Cross multiply
    6,689.81x = 9,994.02 × 4,330.59
  4. Step 4: Simplify right side
    6,689.81x = 43,280,003.07
  5. Step 5: Solve for x
    x = 43,280,003.07/6,689.81
  6. Step 6: Final answer
    x = 6,469.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.