Home / 1,264.47-1,893.80-1,220.69

Finding the Fourth Proportional to 1,264.47, 1,893.80 and 1,220.69

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Solution

The fourth proportional to 1,264.47, 1,893.80 and 1,220.69 is: 1,828.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,264.47 : 1,893.80 = 1,220.69 : x
  2. Step 2: Convert to fraction form
    1,264.47/1,893.80 = 1,220.69/x
  3. Step 3: Cross multiply
    1,264.47x = 1,893.80 × 1,220.69
  4. Step 4: Simplify right side
    1,264.47x = 2,311,747.46
  5. Step 5: Solve for x
    x = 2,311,747.46/1,264.47
  6. Step 6: Final answer
    x = 1,828.23

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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.