Home / 7,134.18-9,845.55-3,989.82

Finding the Fourth Proportional to 7,134.18, 9,845.55 and 3,989.82

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Solution

The fourth proportional to 7,134.18, 9,845.55 and 3,989.82 is: 5,506.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,134.18 : 9,845.55 = 3,989.82 : x
  2. Step 2: Convert to fraction form
    7,134.18/9,845.55 = 3,989.82/x
  3. Step 3: Cross multiply
    7,134.18x = 9,845.55 × 3,989.82
  4. Step 4: Simplify right side
    7,134.18x = 39,281,972.30
  5. Step 5: Solve for x
    x = 39,281,972.30/7,134.18
  6. Step 6: Final answer
    x = 5,506.17

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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.