Home / 1,220.88-1,830.69-946.29

Finding the Fourth Proportional to 1,220.88, 1,830.69 and 946.29

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Solution

The fourth proportional to 1,220.88, 1,830.69 and 946.29 is: 1,418.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.88 : 1,830.69 = 946.29 : x
  2. Step 2: Convert to fraction form
    1,220.88/1,830.69 = 946.29/x
  3. Step 3: Cross multiply
    1,220.88x = 1,830.69 × 946.29
  4. Step 4: Simplify right side
    1,220.88x = 1,732,363.64
  5. Step 5: Solve for x
    x = 1,732,363.64/1,220.88
  6. Step 6: Final answer
    x = 1,418.95

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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.