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Finding the Fourth Proportional to 3,875.70, 5,813.61 and 3,574.78

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Solution

The fourth proportional to 3,875.70, 5,813.61 and 3,574.78 is: 5,362.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,875.70 : 5,813.61 = 3,574.78 : x
  2. Step 2: Convert to fraction form
    3,875.70/5,813.61 = 3,574.78/x
  3. Step 3: Cross multiply
    3,875.70x = 5,813.61 × 3,574.78
  4. Step 4: Simplify right side
    3,875.70x = 20,782,376.76
  5. Step 5: Solve for x
    x = 20,782,376.76/3,875.70
  6. Step 6: Final answer
    x = 5,362.23

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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.