Home / 8,348.70-11,520.42-4,990.86

Finding the Fourth Proportional to 8,348.70, 11,520.42 and 4,990.86

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Solution

The fourth proportional to 8,348.70, 11,520.42 and 4,990.86 is: 6,886.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,348.70 : 11,520.42 = 4,990.86 : x
  2. Step 2: Convert to fraction form
    8,348.70/11,520.42 = 4,990.86/x
  3. Step 3: Cross multiply
    8,348.70x = 11,520.42 × 4,990.86
  4. Step 4: Simplify right side
    8,348.70x = 57,496,803.36
  5. Step 5: Solve for x
    x = 57,496,803.36/8,348.70
  6. Step 6: Final answer
    x = 6,886.92

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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.