Home / 4,778.74-7,165.36-1,966.78

Finding the Fourth Proportional to 4,778.74, 7,165.36 and 1,966.78

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Solution

The fourth proportional to 4,778.74, 7,165.36 and 1,966.78 is: 2,949.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.74 : 7,165.36 = 1,966.78 : x
  2. Step 2: Convert to fraction form
    4,778.74/7,165.36 = 1,966.78/x
  3. Step 3: Cross multiply
    4,778.74x = 7,165.36 × 1,966.78
  4. Step 4: Simplify right side
    4,778.74x = 14,092,686.74
  5. Step 5: Solve for x
    x = 14,092,686.74/4,778.74
  6. Step 6: Final answer
    x = 2,949.04

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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.