Home / 7,134.18-9,844.26-3,990.30

Finding the Fourth Proportional to 7,134.18, 9,844.26 and 3,990.30

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Solution

The fourth proportional to 7,134.18, 9,844.26 and 3,990.30 is: 5,506.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134.18 : 9,844.26 = 3,990.30 : x
  2. Step 2: Convert to fraction form
    7,134.18/9,844.26 = 3,990.30/x
  3. Step 3: Cross multiply
    7,134.18x = 9,844.26 × 3,990.30
  4. Step 4: Simplify right side
    7,134.18x = 39,281,550.68
  5. Step 5: Solve for x
    x = 39,281,550.68/7,134.18
  6. Step 6: Final answer
    x = 5,506.11

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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.