Home / 8,869.15-12,239.49-4,890.70

Finding the Fourth Proportional to 8,869.15, 12,239.49 and 4,890.70

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Solution

The fourth proportional to 8,869.15, 12,239.49 and 4,890.70 is: 6,749.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,869.15 : 12,239.49 = 4,890.70 : x
  2. Step 2: Convert to fraction form
    8,869.15/12,239.49 = 4,890.70/x
  3. Step 3: Cross multiply
    8,869.15x = 12,239.49 × 4,890.70
  4. Step 4: Simplify right side
    8,869.15x = 59,859,673.74
  5. Step 5: Solve for x
    x = 59,859,673.74/8,869.15
  6. Step 6: Final answer
    x = 6,749.20

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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.