Home / 2,708.40-4,060.14-1,405.92

Finding the Fourth Proportional to 2,708.40, 4,060.14 and 1,405.92

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Solution

The fourth proportional to 2,708.40, 4,060.14 and 1,405.92 is: 2,107.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,708.40 : 4,060.14 = 1,405.92 : x
  2. Step 2: Convert to fraction form
    2,708.40/4,060.14 = 1,405.92/x
  3. Step 3: Cross multiply
    2,708.40x = 4,060.14 × 1,405.92
  4. Step 4: Simplify right side
    2,708.40x = 5,708,232.03
  5. Step 5: Solve for x
    x = 5,708,232.03/2,708.40
  6. Step 6: Final answer
    x = 2,107.60

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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.