Home / 1,405.41-2,118.30-1,326.03

Finding the Fourth Proportional to 1,405.41, 2,118.30 and 1,326.03

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Solution

The fourth proportional to 1,405.41, 2,118.30 and 1,326.03 is: 1,998.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,405.41 : 2,118.30 = 1,326.03 : x
  2. Step 2: Convert to fraction form
    1,405.41/2,118.30 = 1,326.03/x
  3. Step 3: Cross multiply
    1,405.41x = 2,118.30 × 1,326.03
  4. Step 4: Simplify right side
    1,405.41x = 2,808,929.35
  5. Step 5: Solve for x
    x = 2,808,929.35/1,405.41
  6. Step 6: Final answer
    x = 1,998.65

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.