Home / 2,269.79-3,131.18-1,970.63

Finding the Fourth Proportional to 2,269.79, 3,131.18 and 1,970.63

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Solution

The fourth proportional to 2,269.79, 3,131.18 and 1,970.63 is: 2,718.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,269.79 : 3,131.18 = 1,970.63 : x
  2. Step 2: Convert to fraction form
    2,269.79/3,131.18 = 1,970.63/x
  3. Step 3: Cross multiply
    2,269.79x = 3,131.18 × 1,970.63
  4. Step 4: Simplify right side
    2,269.79x = 6,170,371.73
  5. Step 5: Solve for x
    x = 6,170,371.73/2,269.79
  6. Step 6: Final answer
    x = 2,718.48

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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.