Home / 7,141.20-10,710.74-2,758.11

Finding the Fourth Proportional to 7,141.20, 10,710.74 and 2,758.11

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Solution

The fourth proportional to 7,141.20, 10,710.74 and 2,758.11 is: 4,136.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,141.20 : 10,710.74 = 2,758.11 : x
  2. Step 2: Convert to fraction form
    7,141.20/10,710.74 = 2,758.11/x
  3. Step 3: Cross multiply
    7,141.20x = 10,710.74 × 2,758.11
  4. Step 4: Simplify right side
    7,141.20x = 29,541,331.76
  5. Step 5: Solve for x
    x = 29,541,331.76/7,141.20
  6. Step 6: Final answer
    x = 4,136.75

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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.