Home / 8,868.90-12,239.96-6,626.89

Finding the Fourth Proportional to 8,868.90, 12,239.96 and 6,626.89

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Solution

The fourth proportional to 8,868.90, 12,239.96 and 6,626.89 is: 9,145.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.90 : 12,239.96 = 6,626.89 : x
  2. Step 2: Convert to fraction form
    8,868.90/12,239.96 = 6,626.89/x
  3. Step 3: Cross multiply
    8,868.90x = 12,239.96 × 6,626.89
  4. Step 4: Simplify right side
    8,868.90x = 81,112,838.62
  5. Step 5: Solve for x
    x = 81,112,838.62/8,868.90
  6. Step 6: Final answer
    x = 9,145.76

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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.