Home / 1,284.18-1,927.30-668.06

Finding the Fourth Proportional to 1,284.18, 1,927.30 and 668.06

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Solution

The fourth proportional to 1,284.18, 1,927.30 and 668.06 is: 1,002.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,284.18 : 1,927.30 = 668.06 : x
  2. Step 2: Convert to fraction form
    1,284.18/1,927.30 = 668.06/x
  3. Step 3: Cross multiply
    1,284.18x = 1,927.30 × 668.06
  4. Step 4: Simplify right side
    1,284.18x = 1,287,552.04
  5. Step 5: Solve for x
    x = 1,287,552.04/1,284.18
  6. Step 6: Final answer
    x = 1,002.63

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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.