Home / 8,868.99-12,239.75-4,890.09

Finding the Fourth Proportional to 8,868.99, 12,239.75 and 4,890.09

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Solution

The fourth proportional to 8,868.99, 12,239.75 and 4,890.09 is: 6,748.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,868.99 : 12,239.75 = 4,890.09 : x
  2. Step 2: Convert to fraction form
    8,868.99/12,239.75 = 4,890.09/x
  3. Step 3: Cross multiply
    8,868.99x = 12,239.75 × 4,890.09
  4. Step 4: Simplify right side
    8,868.99x = 59,853,521.90
  5. Step 5: Solve for x
    x = 59,853,521.90/8,868.99
  6. Step 6: Final answer
    x = 6,748.63

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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.