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Finding the Fourth Proportional to 3,465.78, 5,201.18 and 1,357.72

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Solution

The fourth proportional to 3,465.78, 5,201.18 and 1,357.72 is: 2,037.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,465.78 : 5,201.18 = 1,357.72 : x
  2. Step 2: Convert to fraction form
    3,465.78/5,201.18 = 1,357.72/x
  3. Step 3: Cross multiply
    3,465.78x = 5,201.18 × 1,357.72
  4. Step 4: Simplify right side
    3,465.78x = 7,061,746.11
  5. Step 5: Solve for x
    x = 7,061,746.11/3,465.78
  6. Step 6: Final answer
    x = 2,037.56

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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.