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Finding the Fourth Proportional to 3,875.62, 5,813.81 and 1,242.46

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Solution

The fourth proportional to 3,875.62, 5,813.81 and 1,242.46 is: 1,863.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.62 : 5,813.81 = 1,242.46 : x
  2. Step 2: Convert to fraction form
    3,875.62/5,813.81 = 1,242.46/x
  3. Step 3: Cross multiply
    3,875.62x = 5,813.81 × 1,242.46
  4. Step 4: Simplify right side
    3,875.62x = 7,223,432.09
  5. Step 5: Solve for x
    x = 7,223,432.09/3,875.62
  6. Step 6: Final answer
    x = 1,863.81

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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.