Home / 4,778.20-7,166.10-1,657.96

Finding the Fourth Proportional to 4,778.20, 7,166.10 and 1,657.96

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Solution

The fourth proportional to 4,778.20, 7,166.10 and 1,657.96 is: 2,486.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.20 : 7,166.10 = 1,657.96 : x
  2. Step 2: Convert to fraction form
    4,778.20/7,166.10 = 1,657.96/x
  3. Step 3: Cross multiply
    4,778.20x = 7,166.10 × 1,657.96
  4. Step 4: Simplify right side
    4,778.20x = 11,881,107.16
  5. Step 5: Solve for x
    x = 11,881,107.16/4,778.20
  6. Step 6: Final answer
    x = 2,486.52

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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.