Home / 2,289.71-3,160.20-1,295.30

Finding the Fourth Proportional to 2,289.71, 3,160.20 and 1,295.30

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Solution

The fourth proportional to 2,289.71, 3,160.20 and 1,295.30 is: 1,787.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.71 : 3,160.20 = 1,295.30 : x
  2. Step 2: Convert to fraction form
    2,289.71/3,160.20 = 1,295.30/x
  3. Step 3: Cross multiply
    2,289.71x = 3,160.20 × 1,295.30
  4. Step 4: Simplify right side
    2,289.71x = 4,093,391.26
  5. Step 5: Solve for x
    x = 4,093,391.26/2,289.71
  6. Step 6: Final answer
    x = 1,787.74

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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.