Home / 5,389.12-8,081.66-1,878.22

Finding the Fourth Proportional to 5,389.12, 8,081.66 and 1,878.22

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Solution

The fourth proportional to 5,389.12, 8,081.66 and 1,878.22 is: 2,816.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,389.12 : 8,081.66 = 1,878.22 : x
  2. Step 2: Convert to fraction form
    5,389.12/8,081.66 = 1,878.22/x
  3. Step 3: Cross multiply
    5,389.12x = 8,081.66 × 1,878.22
  4. Step 4: Simplify right side
    5,389.12x = 15,179,139.68
  5. Step 5: Solve for x
    x = 15,179,139.68/5,389.12
  6. Step 6: Final answer
    x = 2,816.63

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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.