Home / 1,812.62-2,497.68-1,392.95

Finding the Fourth Proportional to 1,812.62, 2,497.68 and 1,392.95

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Solution

The fourth proportional to 1,812.62, 2,497.68 and 1,392.95 is: 1,919.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,812.62 : 2,497.68 = 1,392.95 : x
  2. Step 2: Convert to fraction form
    1,812.62/2,497.68 = 1,392.95/x
  3. Step 3: Cross multiply
    1,812.62x = 2,497.68 × 1,392.95
  4. Step 4: Simplify right side
    1,812.62x = 3,479,143.36
  5. Step 5: Solve for x
    x = 3,479,143.36/1,812.62
  6. Step 6: Final answer
    x = 1,919.40

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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.