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Finding the Fourth Proportional to 2,686.66, 4,025.27 and 1,865.45

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Solution

The fourth proportional to 2,686.66, 4,025.27 and 1,865.45 is: 2,794.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,686.66 : 4,025.27 = 1,865.45 : x
  2. Step 2: Convert to fraction form
    2,686.66/4,025.27 = 1,865.45/x
  3. Step 3: Cross multiply
    2,686.66x = 4,025.27 × 1,865.45
  4. Step 4: Simplify right side
    2,686.66x = 7,508,939.92
  5. Step 5: Solve for x
    x = 7,508,939.92/2,686.66
  6. Step 6: Final answer
    x = 2,794.90

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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.