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Finding the Fourth Proportional to 2,881.04, 3,975.76 and 1,639.04

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Solution

The fourth proportional to 2,881.04, 3,975.76 and 1,639.04 is: 2,261.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,881.04 : 3,975.76 = 1,639.04 : x
  2. Step 2: Convert to fraction form
    2,881.04/3,975.76 = 1,639.04/x
  3. Step 3: Cross multiply
    2,881.04x = 3,975.76 × 1,639.04
  4. Step 4: Simplify right side
    2,881.04x = 6,516,429.67
  5. Step 5: Solve for x
    x = 6,516,429.67/2,881.04
  6. Step 6: Final answer
    x = 2,261.83

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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.