Home / 2,381.28-3,569.18-919.62

Finding the Fourth Proportional to 2,381.28, 3,569.18 and 919.62

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Solution

The fourth proportional to 2,381.28, 3,569.18 and 919.62 is: 1,378.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,381.28 : 3,569.18 = 919.62 : x
  2. Step 2: Convert to fraction form
    2,381.28/3,569.18 = 919.62/x
  3. Step 3: Cross multiply
    2,381.28x = 3,569.18 × 919.62
  4. Step 4: Simplify right side
    2,381.28x = 3,282,289.31
  5. Step 5: Solve for x
    x = 3,282,289.31/2,381.28
  6. Step 6: Final answer
    x = 1,378.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.