Home / 2,877.60-4,309.55-1,778.64

Finding the Fourth Proportional to 2,877.60, 4,309.55 and 1,778.64

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Solution

The fourth proportional to 2,877.60, 4,309.55 and 1,778.64 is: 2,663.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,877.60 : 4,309.55 = 1,778.64 : x
  2. Step 2: Convert to fraction form
    2,877.60/4,309.55 = 1,778.64/x
  3. Step 3: Cross multiply
    2,877.60x = 4,309.55 × 1,778.64
  4. Step 4: Simplify right side
    2,877.60x = 7,665,138.01
  5. Step 5: Solve for x
    x = 7,665,138.01/2,877.60
  6. Step 6: Final answer
    x = 2,663.73

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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.