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Finding the Fourth Proportional to 3,378.51, 5,070.02 and 1,187.24

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Solution

The fourth proportional to 3,378.51, 5,070.02 and 1,187.24 is: 1,781.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,378.51 : 5,070.02 = 1,187.24 : x
  2. Step 2: Convert to fraction form
    3,378.51/5,070.02 = 1,187.24/x
  3. Step 3: Cross multiply
    3,378.51x = 5,070.02 × 1,187.24
  4. Step 4: Simplify right side
    3,378.51x = 6,019,330.54
  5. Step 5: Solve for x
    x = 6,019,330.54/3,378.51
  6. Step 6: Final answer
    x = 1,781.65

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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.