Home / 4,778.13-7,167.60-1,657.20

Finding the Fourth Proportional to 4,778.13, 7,167.60 and 1,657.20

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Solution

The fourth proportional to 4,778.13, 7,167.60 and 1,657.20 is: 2,485.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,778.13 : 7,167.60 = 1,657.20 : x
  2. Step 2: Convert to fraction form
    4,778.13/7,167.60 = 1,657.20/x
  3. Step 3: Cross multiply
    4,778.13x = 7,167.60 × 1,657.20
  4. Step 4: Simplify right side
    4,778.13x = 11,878,146.72
  5. Step 5: Solve for x
    x = 11,878,146.72/4,778.13
  6. Step 6: Final answer
    x = 2,485.94

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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.