Home / 8,813.33-12,178.49-6,419.14

Finding the Fourth Proportional to 8,813.33, 12,178.49 and 6,419.14

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Solution

The fourth proportional to 8,813.33, 12,178.49 and 6,419.14 is: 8,870.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.33 : 12,178.49 = 6,419.14 : x
  2. Step 2: Convert to fraction form
    8,813.33/12,178.49 = 6,419.14/x
  3. Step 3: Cross multiply
    8,813.33x = 12,178.49 × 6,419.14
  4. Step 4: Simplify right side
    8,813.33x = 78,175,417.90
  5. Step 5: Solve for x
    x = 78,175,417.90/8,813.33
  6. Step 6: Final answer
    x = 8,870.13

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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.