Home / 5,151.11-7,106.85-2,912.76

Finding the Fourth Proportional to 5,151.11, 7,106.85 and 2,912.76

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Solution

The fourth proportional to 5,151.11, 7,106.85 and 2,912.76 is: 4,018.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,151.11 : 7,106.85 = 2,912.76 : x
  2. Step 2: Convert to fraction form
    5,151.11/7,106.85 = 2,912.76/x
  3. Step 3: Cross multiply
    5,151.11x = 7,106.85 × 2,912.76
  4. Step 4: Simplify right side
    5,151.11x = 20,700,548.41
  5. Step 5: Solve for x
    x = 20,700,548.41/5,151.11
  6. Step 6: Final answer
    x = 4,018.66

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Half scale
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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.