Home / 2,188.28-3,017.80-1,630.12

Finding the Fourth Proportional to 2,188.28, 3,017.80 and 1,630.12

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Solution

The fourth proportional to 2,188.28, 3,017.80 and 1,630.12 is: 2,248.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,188.28 : 3,017.80 = 1,630.12 : x
  2. Step 2: Convert to fraction form
    2,188.28/3,017.80 = 1,630.12/x
  3. Step 3: Cross multiply
    2,188.28x = 3,017.80 × 1,630.12
  4. Step 4: Simplify right side
    2,188.28x = 4,919,376.14
  5. Step 5: Solve for x
    x = 4,919,376.14/2,188.28
  6. Step 6: Final answer
    x = 2,248.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.