Home / 2,760.32-4,140.98-911.52

Finding the Fourth Proportional to 2,760.32, 4,140.98 and 911.52

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Solution

The fourth proportional to 2,760.32, 4,140.98 and 911.52 is: 1,367.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,760.32 : 4,140.98 = 911.52 : x
  2. Step 2: Convert to fraction form
    2,760.32/4,140.98 = 911.52/x
  3. Step 3: Cross multiply
    2,760.32x = 4,140.98 × 911.52
  4. Step 4: Simplify right side
    2,760.32x = 3,774,586.09
  5. Step 5: Solve for x
    x = 3,774,586.09/2,760.32
  6. Step 6: Final answer
    x = 1,367.45

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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.