Home / 2,099.93-3,146.42-1,275.70

Finding the Fourth Proportional to 2,099.93, 3,146.42 and 1,275.70

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Solution

The fourth proportional to 2,099.93, 3,146.42 and 1,275.70 is: 1,911.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,099.93 : 3,146.42 = 1,275.70 : x
  2. Step 2: Convert to fraction form
    2,099.93/3,146.42 = 1,275.70/x
  3. Step 3: Cross multiply
    2,099.93x = 3,146.42 × 1,275.70
  4. Step 4: Simplify right side
    2,099.93x = 4,013,885.63
  5. Step 5: Solve for x
    x = 4,013,885.63/2,099.93
  6. Step 6: Final answer
    x = 1,911.44

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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.