Home / 2,289.76-3,159.68-1,295.16

Finding the Fourth Proportional to 2,289.76, 3,159.68 and 1,295.16

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Solution

The fourth proportional to 2,289.76, 3,159.68 and 1,295.16 is: 1,787.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.76 : 3,159.68 = 1,295.16 : x
  2. Step 2: Convert to fraction form
    2,289.76/3,159.68 = 1,295.16/x
  3. Step 3: Cross multiply
    2,289.76x = 3,159.68 × 1,295.16
  4. Step 4: Simplify right side
    2,289.76x = 4,092,291.15
  5. Step 5: Solve for x
    x = 4,092,291.15/2,289.76
  6. Step 6: Final answer
    x = 1,787.21

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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.