Home / 2,289.50-3,436.20-903.80

Finding the Fourth Proportional to 2,289.50, 3,436.20 and 903.80

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Solution

The fourth proportional to 2,289.50, 3,436.20 and 903.80 is: 1,356.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,289.50 : 3,436.20 = 903.80 : x
  2. Step 2: Convert to fraction form
    2,289.50/3,436.20 = 903.80/x
  3. Step 3: Cross multiply
    2,289.50x = 3,436.20 × 903.80
  4. Step 4: Simplify right side
    2,289.50x = 3,105,637.56
  5. Step 5: Solve for x
    x = 3,105,637.56/2,289.50
  6. Step 6: Final answer
    x = 1,356.47

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1.5x scale

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.