Home / 1,405.92-2,104.29-1,271.19

Finding the Fourth Proportional to 1,405.92, 2,104.29 and 1,271.19

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Solution

The fourth proportional to 1,405.92, 2,104.29 and 1,271.19 is: 1,902.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.92 : 2,104.29 = 1,271.19 : x
  2. Step 2: Convert to fraction form
    1,405.92/2,104.29 = 1,271.19/x
  3. Step 3: Cross multiply
    1,405.92x = 2,104.29 × 1,271.19
  4. Step 4: Simplify right side
    1,405.92x = 2,674,952.41
  5. Step 5: Solve for x
    x = 2,674,952.41/1,405.92
  6. Step 6: Final answer
    x = 1,902.63

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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.