Home / 1,859.28-2,786.49-1,393.40

Finding the Fourth Proportional to 1,859.28, 2,786.49 and 1,393.40

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Solution

The fourth proportional to 1,859.28, 2,786.49 and 1,393.40 is: 2,088.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,859.28 : 2,786.49 = 1,393.40 : x
  2. Step 2: Convert to fraction form
    1,859.28/2,786.49 = 1,393.40/x
  3. Step 3: Cross multiply
    1,859.28x = 2,786.49 × 1,393.40
  4. Step 4: Simplify right side
    1,859.28x = 3,882,695.17
  5. Step 5: Solve for x
    x = 3,882,695.17/1,859.28
  6. Step 6: Final answer
    x = 2,088.28

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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.