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Finding the Fourth Proportional to 3,785.01, 5,677.05 and 1,319.63

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Solution

The fourth proportional to 3,785.01, 5,677.05 and 1,319.63 is: 1,979.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.01 : 5,677.05 = 1,319.63 : x
  2. Step 2: Convert to fraction form
    3,785.01/5,677.05 = 1,319.63/x
  3. Step 3: Cross multiply
    3,785.01x = 5,677.05 × 1,319.63
  4. Step 4: Simplify right side
    3,785.01x = 7,491,605.49
  5. Step 5: Solve for x
    x = 7,491,605.49/3,785.01
  6. Step 6: Final answer
    x = 1,979.28

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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.