Home / 3,930.78-5,898.75-1,465.62

Finding the Fourth Proportional to 3,930.78, 5,898.75 and 1,465.62

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Solution

The fourth proportional to 3,930.78, 5,898.75 and 1,465.62 is: 2,199.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,930.78 : 5,898.75 = 1,465.62 : x
  2. Step 2: Convert to fraction form
    3,930.78/5,898.75 = 1,465.62/x
  3. Step 3: Cross multiply
    3,930.78x = 5,898.75 × 1,465.62
  4. Step 4: Simplify right side
    3,930.78x = 8,645,325.98
  5. Step 5: Solve for x
    x = 8,645,325.98/3,930.78
  6. Step 6: Final answer
    x = 2,199.39

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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.