Home / 2,172.30-3,265.65-1,785.17

Finding the Fourth Proportional to 2,172.30, 3,265.65 and 1,785.17

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Solution

The fourth proportional to 2,172.30, 3,265.65 and 1,785.17 is: 2,683.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.30 : 3,265.65 = 1,785.17 : x
  2. Step 2: Convert to fraction form
    2,172.30/3,265.65 = 1,785.17/x
  3. Step 3: Cross multiply
    2,172.30x = 3,265.65 × 1,785.17
  4. Step 4: Simplify right side
    2,172.30x = 5,829,724.08
  5. Step 5: Solve for x
    x = 5,829,724.08/2,172.30
  6. Step 6: Final answer
    x = 2,683.66

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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.