Home / 2,803.28-3,868.54-1,608.20

Finding the Fourth Proportional to 2,803.28, 3,868.54 and 1,608.20

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Solution

The fourth proportional to 2,803.28, 3,868.54 and 1,608.20 is: 2,219.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,803.28 : 3,868.54 = 1,608.20 : x
  2. Step 2: Convert to fraction form
    2,803.28/3,868.54 = 1,608.20/x
  3. Step 3: Cross multiply
    2,803.28x = 3,868.54 × 1,608.20
  4. Step 4: Simplify right side
    2,803.28x = 6,221,386.03
  5. Step 5: Solve for x
    x = 6,221,386.03/2,803.28
  6. Step 6: Final answer
    x = 2,219.32

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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.