Home / 2,172.30-3,258.45-1,002.30

Finding the Fourth Proportional to 2,172.30, 3,258.45 and 1,002.30

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Solution

The fourth proportional to 2,172.30, 3,258.45 and 1,002.30 is: 1,503.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,172.30 : 3,258.45 = 1,002.30 : x
  2. Step 2: Convert to fraction form
    2,172.30/3,258.45 = 1,002.30/x
  3. Step 3: Cross multiply
    2,172.30x = 3,258.45 × 1,002.30
  4. Step 4: Simplify right side
    2,172.30x = 3,265,944.44
  5. Step 5: Solve for x
    x = 3,265,944.44/2,172.30
  6. Step 6: Final answer
    x = 1,503.45

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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.