Home / 4,719.05-7,078.56-2,118.95

Finding the Fourth Proportional to 4,719.05, 7,078.56 and 2,118.95

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Solution

The fourth proportional to 4,719.05, 7,078.56 and 2,118.95 is: 3,178.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,719.05 : 7,078.56 = 2,118.95 : x
  2. Step 2: Convert to fraction form
    4,719.05/7,078.56 = 2,118.95/x
  3. Step 3: Cross multiply
    4,719.05x = 7,078.56 × 2,118.95
  4. Step 4: Simplify right side
    4,719.05x = 14,999,079.32
  5. Step 5: Solve for x
    x = 14,999,079.32/4,719.05
  6. Step 6: Final answer
    x = 3,178.41

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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.