Home / 2,660.46-3,988.95-1,490.61

Finding the Fourth Proportional to 2,660.46, 3,988.95 and 1,490.61

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Solution

The fourth proportional to 2,660.46, 3,988.95 and 1,490.61 is: 2,234.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,660.46 : 3,988.95 = 1,490.61 : x
  2. Step 2: Convert to fraction form
    2,660.46/3,988.95 = 1,490.61/x
  3. Step 3: Cross multiply
    2,660.46x = 3,988.95 × 1,490.61
  4. Step 4: Simplify right side
    2,660.46x = 5,945,968.76
  5. Step 5: Solve for x
    x = 5,945,968.76/2,660.46
  6. Step 6: Final answer
    x = 2,234.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.