Home / 3,630.30-5,445.45-1,990.08

Finding the Fourth Proportional to 3,630.30, 5,445.45 and 1,990.08

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Solution

The fourth proportional to 3,630.30, 5,445.45 and 1,990.08 is: 2,985.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,630.30 : 5,445.45 = 1,990.08 : x
  2. Step 2: Convert to fraction form
    3,630.30/5,445.45 = 1,990.08/x
  3. Step 3: Cross multiply
    3,630.30x = 5,445.45 × 1,990.08
  4. Step 4: Simplify right side
    3,630.30x = 10,836,881.14
  5. Step 5: Solve for x
    x = 10,836,881.14/3,630.30
  6. Step 6: Final answer
    x = 2,985.12

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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.