Home / 2,261.86-3,389.55-1,285.90

Finding the Fourth Proportional to 2,261.86, 3,389.55 and 1,285.90

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Solution

The fourth proportional to 2,261.86, 3,389.55 and 1,285.90 is: 1,927.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,261.86 : 3,389.55 = 1,285.90 : x
  2. Step 2: Convert to fraction form
    2,261.86/3,389.55 = 1,285.90/x
  3. Step 3: Cross multiply
    2,261.86x = 3,389.55 × 1,285.90
  4. Step 4: Simplify right side
    2,261.86x = 4,358,622.35
  5. Step 5: Solve for x
    x = 4,358,622.35/2,261.86
  6. Step 6: Final answer
    x = 1,927.01

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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.