Home / 1,284.80-1,926.24-514.88

Finding the Fourth Proportional to 1,284.80, 1,926.24 and 514.88

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Solution

The fourth proportional to 1,284.80, 1,926.24 and 514.88 is: 771.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.80 : 1,926.24 = 514.88 : x
  2. Step 2: Convert to fraction form
    1,284.80/1,926.24 = 514.88/x
  3. Step 3: Cross multiply
    1,284.80x = 1,926.24 × 514.88
  4. Step 4: Simplify right side
    1,284.80x = 991,782.45
  5. Step 5: Solve for x
    x = 991,782.45/1,284.80
  6. Step 6: Final answer
    x = 771.94

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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.