Home / 1,948.14-2,688.33-1,108.71

Finding the Fourth Proportional to 1,948.14, 2,688.33 and 1,108.71

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Solution

The fourth proportional to 1,948.14, 2,688.33 and 1,108.71 is: 1,529.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.14 : 2,688.33 = 1,108.71 : x
  2. Step 2: Convert to fraction form
    1,948.14/2,688.33 = 1,108.71/x
  3. Step 3: Cross multiply
    1,948.14x = 2,688.33 × 1,108.71
  4. Step 4: Simplify right side
    1,948.14x = 2,980,578.35
  5. Step 5: Solve for x
    x = 2,980,578.35/1,948.14
  6. Step 6: Final answer
    x = 1,529.96

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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.