Home / 2,289.89-3,159.86-1,295.21

Finding the Fourth Proportional to 2,289.89, 3,159.86 and 1,295.21

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Solution

The fourth proportional to 2,289.89, 3,159.86 and 1,295.21 is: 1,787.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.89 : 3,159.86 = 1,295.21 : x
  2. Step 2: Convert to fraction form
    2,289.89/3,159.86 = 1,295.21/x
  3. Step 3: Cross multiply
    2,289.89x = 3,159.86 × 1,295.21
  4. Step 4: Simplify right side
    2,289.89x = 4,092,660.00
  5. Step 5: Solve for x
    x = 4,092,660.00/2,289.89
  6. Step 6: Final answer
    x = 1,787.28

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1.5x scale

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.