Home / 4,780.76-7,170.60-1,660.22

Finding the Fourth Proportional to 4,780.76, 7,170.60 and 1,660.22

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Solution

The fourth proportional to 4,780.76, 7,170.60 and 1,660.22 is: 2,490.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.76 : 7,170.60 = 1,660.22 : x
  2. Step 2: Convert to fraction form
    4,780.76/7,170.60 = 1,660.22/x
  3. Step 3: Cross multiply
    4,780.76x = 7,170.60 × 1,660.22
  4. Step 4: Simplify right side
    4,780.76x = 11,904,773.53
  5. Step 5: Solve for x
    x = 11,904,773.53/4,780.76
  6. Step 6: Final answer
    x = 2,490.14

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1.5x scale

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.