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Finding the Fourth Proportional to 3,866.76, 5,798.88 and 1,400.88

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Solution

The fourth proportional to 3,866.76, 5,798.88 and 1,400.88 is: 2,100.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,866.76 : 5,798.88 = 1,400.88 : x
  2. Step 2: Convert to fraction form
    3,866.76/5,798.88 = 1,400.88/x
  3. Step 3: Cross multiply
    3,866.76x = 5,798.88 × 1,400.88
  4. Step 4: Simplify right side
    3,866.76x = 8,123,535.01
  5. Step 5: Solve for x
    x = 8,123,535.01/3,866.76
  6. Step 6: Final answer
    x = 2,100.86

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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.