Home / 1,860.32-2,790.49-1,392.29

Finding the Fourth Proportional to 1,860.32, 2,790.49 and 1,392.29

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Solution

The fourth proportional to 1,860.32, 2,790.49 and 1,392.29 is: 2,088.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,860.32 : 2,790.49 = 1,392.29 : x
  2. Step 2: Convert to fraction form
    1,860.32/2,790.49 = 1,392.29/x
  3. Step 3: Cross multiply
    1,860.32x = 2,790.49 × 1,392.29
  4. Step 4: Simplify right side
    1,860.32x = 3,885,150.41
  5. Step 5: Solve for x
    x = 3,885,150.41/1,860.32
  6. Step 6: Final answer
    x = 2,088.43

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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.