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Finding the Fourth Proportional to 2,613.04, 3,919.68 and 881.68

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Solution

The fourth proportional to 2,613.04, 3,919.68 and 881.68 is: 1,322.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,613.04 : 3,919.68 = 881.68 : x
  2. Step 2: Convert to fraction form
    2,613.04/3,919.68 = 881.68/x
  3. Step 3: Cross multiply
    2,613.04x = 3,919.68 × 881.68
  4. Step 4: Simplify right side
    2,613.04x = 3,455,903.46
  5. Step 5: Solve for x
    x = 3,455,903.46/2,613.04
  6. Step 6: Final answer
    x = 1,322.56

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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.