Home / 2,930.78-4,397.20-1,806.32

Finding the Fourth Proportional to 2,930.78, 4,397.20 and 1,806.32

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Solution

The fourth proportional to 2,930.78, 4,397.20 and 1,806.32 is: 2,710.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,930.78 : 4,397.20 = 1,806.32 : x
  2. Step 2: Convert to fraction form
    2,930.78/4,397.20 = 1,806.32/x
  3. Step 3: Cross multiply
    2,930.78x = 4,397.20 × 1,806.32
  4. Step 4: Simplify right side
    2,930.78x = 7,942,750.30
  5. Step 5: Solve for x
    x = 7,942,750.30/2,930.78
  6. Step 6: Final answer
    x = 2,710.11

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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.