Home / 2,285.89-3,154.47-1,291.14

Finding the Fourth Proportional to 2,285.89, 3,154.47 and 1,291.14

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Solution

The fourth proportional to 2,285.89, 3,154.47 and 1,291.14 is: 1,781.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,285.89 : 3,154.47 = 1,291.14 : x
  2. Step 2: Convert to fraction form
    2,285.89/3,154.47 = 1,291.14/x
  3. Step 3: Cross multiply
    2,285.89x = 3,154.47 × 1,291.14
  4. Step 4: Simplify right side
    2,285.89x = 4,072,862.40
  5. Step 5: Solve for x
    x = 4,072,862.40/2,285.89
  6. Step 6: Final answer
    x = 1,781.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.