Home / 2,600.71-3,898.33-1,778.76

Finding the Fourth Proportional to 2,600.71, 3,898.33 and 1,778.76

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Solution

The fourth proportional to 2,600.71, 3,898.33 and 1,778.76 is: 2,666.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,600.71 : 3,898.33 = 1,778.76 : x
  2. Step 2: Convert to fraction form
    2,600.71/3,898.33 = 1,778.76/x
  3. Step 3: Cross multiply
    2,600.71x = 3,898.33 × 1,778.76
  4. Step 4: Simplify right side
    2,600.71x = 6,934,189.02
  5. Step 5: Solve for x
    x = 6,934,189.02/2,600.71
  6. Step 6: Final answer
    x = 2,666.27

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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.