Home / 2,750.28-4,122.54-1,288.24

Finding the Fourth Proportional to 2,750.28, 4,122.54 and 1,288.24

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Solution

The fourth proportional to 2,750.28, 4,122.54 and 1,288.24 is: 1,931.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,750.28 : 4,122.54 = 1,288.24 : x
  2. Step 2: Convert to fraction form
    2,750.28/4,122.54 = 1,288.24/x
  3. Step 3: Cross multiply
    2,750.28x = 4,122.54 × 1,288.24
  4. Step 4: Simplify right side
    2,750.28x = 5,310,820.93
  5. Step 5: Solve for x
    x = 5,310,820.93/2,750.28
  6. Step 6: Final answer
    x = 1,931.01

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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.