Home / 1,554.12-2,330.30-1,421.72

Finding the Fourth Proportional to 1,554.12, 2,330.30 and 1,421.72

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Solution

The fourth proportional to 1,554.12, 2,330.30 and 1,421.72 is: 2,131.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,554.12 : 2,330.30 = 1,421.72 : x
  2. Step 2: Convert to fraction form
    1,554.12/2,330.30 = 1,421.72/x
  3. Step 3: Cross multiply
    1,554.12x = 2,330.30 × 1,421.72
  4. Step 4: Simplify right side
    1,554.12x = 3,313,034.76
  5. Step 5: Solve for x
    x = 3,313,034.76/1,554.12
  6. Step 6: Final answer
    x = 2,131.78

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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.