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Finding the Fourth Proportional to 6,988.65, 9,644.16 and 3,801.81

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Solution

The fourth proportional to 6,988.65, 9,644.16 and 3,801.81 is: 5,246.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,988.65 : 9,644.16 = 3,801.81 : x
  2. Step 2: Convert to fraction form
    6,988.65/9,644.16 = 3,801.81/x
  3. Step 3: Cross multiply
    6,988.65x = 9,644.16 × 3,801.81
  4. Step 4: Simplify right side
    6,988.65x = 36,665,263.93
  5. Step 5: Solve for x
    x = 36,665,263.93/6,988.65
  6. Step 6: Final answer
    x = 5,246.40

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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.