Home / 6,869.84-10,304.64-2,189.78

Finding the Fourth Proportional to 6,869.84, 10,304.64 and 2,189.78

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Solution

The fourth proportional to 6,869.84, 10,304.64 and 2,189.78 is: 3,284.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,869.84 : 10,304.64 = 2,189.78 : x
  2. Step 2: Convert to fraction form
    6,869.84/10,304.64 = 2,189.78/x
  3. Step 3: Cross multiply
    6,869.84x = 10,304.64 × 2,189.78
  4. Step 4: Simplify right side
    6,869.84x = 22,564,920.34
  5. Step 5: Solve for x
    x = 22,564,920.34/6,869.84
  6. Step 6: Final answer
    x = 3,284.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.