Home / 2,740.19-4,109.75-985.15

Finding the Fourth Proportional to 2,740.19, 4,109.75 and 985.15

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Solution

The fourth proportional to 2,740.19, 4,109.75 and 985.15 is: 1,477.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.19 : 4,109.75 = 985.15 : x
  2. Step 2: Convert to fraction form
    2,740.19/4,109.75 = 985.15/x
  3. Step 3: Cross multiply
    2,740.19x = 4,109.75 × 985.15
  4. Step 4: Simplify right side
    2,740.19x = 4,048,694.74
  5. Step 5: Solve for x
    x = 4,048,694.74/2,740.19
  6. Step 6: Final answer
    x = 1,477.52

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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.