Home / 1,948.68-2,688.68-1,109.07

Finding the Fourth Proportional to 1,948.68, 2,688.68 and 1,109.07

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Solution

The fourth proportional to 1,948.68, 2,688.68 and 1,109.07 is: 1,530.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,948.68 : 2,688.68 = 1,109.07 : x
  2. Step 2: Convert to fraction form
    1,948.68/2,688.68 = 1,109.07/x
  3. Step 3: Cross multiply
    1,948.68x = 2,688.68 × 1,109.07
  4. Step 4: Simplify right side
    1,948.68x = 2,981,937.10
  5. Step 5: Solve for x
    x = 2,981,937.10/1,948.68
  6. Step 6: Final answer
    x = 1,530.23

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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.