Home / 3,178.07-4,767.13-869.57

Finding the Fourth Proportional to 3,178.07, 4,767.13 and 869.57

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Solution

The fourth proportional to 3,178.07, 4,767.13 and 869.57 is: 1,304.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,178.07 : 4,767.13 = 869.57 : x
  2. Step 2: Convert to fraction form
    3,178.07/4,767.13 = 869.57/x
  3. Step 3: Cross multiply
    3,178.07x = 4,767.13 × 869.57
  4. Step 4: Simplify right side
    3,178.07x = 4,145,329.40
  5. Step 5: Solve for x
    x = 4,145,329.40/3,178.07
  6. Step 6: Final answer
    x = 1,304.36

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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.