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Finding the Fourth Proportional to 2,781.08, 3,838.04 and 1,602.20

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Solution

The fourth proportional to 2,781.08, 3,838.04 and 1,602.20 is: 2,211.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,781.08 : 3,838.04 = 1,602.20 : x
  2. Step 2: Convert to fraction form
    2,781.08/3,838.04 = 1,602.20/x
  3. Step 3: Cross multiply
    2,781.08x = 3,838.04 × 1,602.20
  4. Step 4: Simplify right side
    2,781.08x = 6,149,307.69
  5. Step 5: Solve for x
    x = 6,149,307.69/2,781.08
  6. Step 6: Final answer
    x = 2,211.12

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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.