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Finding the Fourth Proportional to 3,380.51, 5,070.76 and 881.69

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Solution

The fourth proportional to 3,380.51, 5,070.76 and 881.69 is: 1,322.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,380.51 : 5,070.76 = 881.69 : x
  2. Step 2: Convert to fraction form
    3,380.51/5,070.76 = 881.69/x
  3. Step 3: Cross multiply
    3,380.51x = 5,070.76 × 881.69
  4. Step 4: Simplify right side
    3,380.51x = 4,470,840.59
  5. Step 5: Solve for x
    x = 4,470,840.59/3,380.51
  6. Step 6: Final answer
    x = 1,322.54

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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.