Home / 1,358.14-1,872.21-984.52

Finding the Fourth Proportional to 1,358.14, 1,872.21 and 984.52

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Solution

The fourth proportional to 1,358.14, 1,872.21 and 984.52 is: 1,357.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.14 : 1,872.21 = 984.52 : x
  2. Step 2: Convert to fraction form
    1,358.14/1,872.21 = 984.52/x
  3. Step 3: Cross multiply
    1,358.14x = 1,872.21 × 984.52
  4. Step 4: Simplify right side
    1,358.14x = 1,843,228.19
  5. Step 5: Solve for x
    x = 1,843,228.19/1,358.14
  6. Step 6: Final answer
    x = 1,357.18

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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.