Home / 1,284.52-1,927.50-515.08

Finding the Fourth Proportional to 1,284.52, 1,927.50 and 515.08

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Solution

The fourth proportional to 1,284.52, 1,927.50 and 515.08 is: 772.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.52 : 1,927.50 = 515.08 : x
  2. Step 2: Convert to fraction form
    1,284.52/1,927.50 = 515.08/x
  3. Step 3: Cross multiply
    1,284.52x = 1,927.50 × 515.08
  4. Step 4: Simplify right side
    1,284.52x = 992,816.70
  5. Step 5: Solve for x
    x = 992,816.70/1,284.52
  6. Step 6: Final answer
    x = 772.91

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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.