Home / 5,876.12-8,107.86-3,989.20

Finding the Fourth Proportional to 5,876.12, 8,107.86 and 3,989.20

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Solution

The fourth proportional to 5,876.12, 8,107.86 and 3,989.20 is: 5,504.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,876.12 : 8,107.86 = 3,989.20 : x
  2. Step 2: Convert to fraction form
    5,876.12/8,107.86 = 3,989.20/x
  3. Step 3: Cross multiply
    5,876.12x = 8,107.86 × 3,989.20
  4. Step 4: Simplify right side
    5,876.12x = 32,343,875.11
  5. Step 5: Solve for x
    x = 32,343,875.11/5,876.12
  6. Step 6: Final answer
    x = 5,504.29

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.