Home / 3,785.18-5,677.53-1,812.21

Finding the Fourth Proportional to 3,785.18, 5,677.53 and 1,812.21

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Solution

The fourth proportional to 3,785.18, 5,677.53 and 1,812.21 is: 2,718.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,785.18 : 5,677.53 = 1,812.21 : x
  2. Step 2: Convert to fraction form
    3,785.18/5,677.53 = 1,812.21/x
  3. Step 3: Cross multiply
    3,785.18x = 5,677.53 × 1,812.21
  4. Step 4: Simplify right side
    3,785.18x = 10,288,876.64
  5. Step 5: Solve for x
    x = 10,288,876.64/3,785.18
  6. Step 6: Final answer
    x = 2,718.20

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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.