Home / 3,117.66-4,675.05-1,818.78

Finding the Fourth Proportional to 3,117.66, 4,675.05 and 1,818.78

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Solution

The fourth proportional to 3,117.66, 4,675.05 and 1,818.78 is: 2,727.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.66 : 4,675.05 = 1,818.78 : x
  2. Step 2: Convert to fraction form
    3,117.66/4,675.05 = 1,818.78/x
  3. Step 3: Cross multiply
    3,117.66x = 4,675.05 × 1,818.78
  4. Step 4: Simplify right side
    3,117.66x = 8,502,887.44
  5. Step 5: Solve for x
    x = 8,502,887.44/3,117.66
  6. Step 6: Final answer
    x = 2,727.33

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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.