Home / 5,555.80-8,329.38-2,781.05

Finding the Fourth Proportional to 5,555.80, 8,329.38 and 2,781.05

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Solution

The fourth proportional to 5,555.80, 8,329.38 and 2,781.05 is: 4,169.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,555.80 : 8,329.38 = 2,781.05 : x
  2. Step 2: Convert to fraction form
    5,555.80/8,329.38 = 2,781.05/x
  3. Step 3: Cross multiply
    5,555.80x = 8,329.38 × 2,781.05
  4. Step 4: Simplify right side
    5,555.80x = 23,164,370.17
  5. Step 5: Solve for x
    x = 23,164,370.17/5,555.80
  6. Step 6: Final answer
    x = 4,169.40

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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.