Home / 1,515.46-2,273.22-784.56

Finding the Fourth Proportional to 1,515.46, 2,273.22 and 784.56

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Solution

The fourth proportional to 1,515.46, 2,273.22 and 784.56 is: 1,176.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,515.46 : 2,273.22 = 784.56 : x
  2. Step 2: Convert to fraction form
    1,515.46/2,273.22 = 784.56/x
  3. Step 3: Cross multiply
    1,515.46x = 2,273.22 × 784.56
  4. Step 4: Simplify right side
    1,515.46x = 1,783,477.48
  5. Step 5: Solve for x
    x = 1,783,477.48/1,515.46
  6. Step 6: Final answer
    x = 1,176.86

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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.