Home / 1,544.11-2,129.90-984.38

Finding the Fourth Proportional to 1,544.11, 2,129.90 and 984.38

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Solution

The fourth proportional to 1,544.11, 2,129.90 and 984.38 is: 1,357.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,544.11 : 2,129.90 = 984.38 : x
  2. Step 2: Convert to fraction form
    1,544.11/2,129.90 = 984.38/x
  3. Step 3: Cross multiply
    1,544.11x = 2,129.90 × 984.38
  4. Step 4: Simplify right side
    1,544.11x = 2,096,621.38
  5. Step 5: Solve for x
    x = 2,096,621.38/1,544.11
  6. Step 6: Final answer
    x = 1,357.82

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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.