Home / 3,040.40-4,191.72-2,107.28

Finding the Fourth Proportional to 3,040.40, 4,191.72 and 2,107.28

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Solution

The fourth proportional to 3,040.40, 4,191.72 and 2,107.28 is: 2,905.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,040.40 : 4,191.72 = 2,107.28 : x
  2. Step 2: Convert to fraction form
    3,040.40/4,191.72 = 2,107.28/x
  3. Step 3: Cross multiply
    3,040.40x = 4,191.72 × 2,107.28
  4. Step 4: Simplify right side
    3,040.40x = 8,833,127.72
  5. Step 5: Solve for x
    x = 8,833,127.72/3,040.40
  6. Step 6: Final answer
    x = 2,905.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.