Home / 5,143.87-7,098.54-2,905.65

Finding the Fourth Proportional to 5,143.87, 7,098.54 and 2,905.65

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Solution

The fourth proportional to 5,143.87, 7,098.54 and 2,905.65 is: 4,009.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,143.87 : 7,098.54 = 2,905.65 : x
  2. Step 2: Convert to fraction form
    5,143.87/7,098.54 = 2,905.65/x
  3. Step 3: Cross multiply
    5,143.87x = 7,098.54 × 2,905.65
  4. Step 4: Simplify right side
    5,143.87x = 20,625,872.75
  5. Step 5: Solve for x
    x = 20,625,872.75/5,143.87
  6. Step 6: Final answer
    x = 4,009.80

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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.