Home / 2,740.80-4,111.20-1,009.02

Finding the Fourth Proportional to 2,740.80, 4,111.20 and 1,009.02

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Solution

The fourth proportional to 2,740.80, 4,111.20 and 1,009.02 is: 1,513.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,740.80 : 4,111.20 = 1,009.02 : x
  2. Step 2: Convert to fraction form
    2,740.80/4,111.20 = 1,009.02/x
  3. Step 3: Cross multiply
    2,740.80x = 4,111.20 × 1,009.02
  4. Step 4: Simplify right side
    2,740.80x = 4,148,283.02
  5. Step 5: Solve for x
    x = 4,148,283.02/2,740.80
  6. Step 6: Final answer
    x = 1,513.53

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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.