Home / 1,948.76-2,688.82-1,109.38

Finding the Fourth Proportional to 1,948.76, 2,688.82 and 1,109.38

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Solution

The fourth proportional to 1,948.76, 2,688.82 and 1,109.38 is: 1,530.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.76 : 2,688.82 = 1,109.38 : x
  2. Step 2: Convert to fraction form
    1,948.76/2,688.82 = 1,109.38/x
  3. Step 3: Cross multiply
    1,948.76x = 2,688.82 × 1,109.38
  4. Step 4: Simplify right side
    1,948.76x = 2,982,923.13
  5. Step 5: Solve for x
    x = 2,982,923.13/1,948.76
  6. Step 6: Final answer
    x = 1,530.68

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1.5x scale

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.