Home / 4,719.20-7,078.80-1,432.14

Finding the Fourth Proportional to 4,719.20, 7,078.80 and 1,432.14

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Solution

The fourth proportional to 4,719.20, 7,078.80 and 1,432.14 is: 2,148.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,719.20 : 7,078.80 = 1,432.14 : x
  2. Step 2: Convert to fraction form
    4,719.20/7,078.80 = 1,432.14/x
  3. Step 3: Cross multiply
    4,719.20x = 7,078.80 × 1,432.14
  4. Step 4: Simplify right side
    4,719.20x = 10,137,832.63
  5. Step 5: Solve for x
    x = 10,137,832.63/4,719.20
  6. Step 6: Final answer
    x = 2,148.21

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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.