Home / 2,822.40-3,894.56-1,563.28

Finding the Fourth Proportional to 2,822.40, 3,894.56 and 1,563.28

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Solution

The fourth proportional to 2,822.40, 3,894.56 and 1,563.28 is: 2,157.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,822.40 : 3,894.56 = 1,563.28 : x
  2. Step 2: Convert to fraction form
    2,822.40/3,894.56 = 1,563.28/x
  3. Step 3: Cross multiply
    2,822.40x = 3,894.56 × 1,563.28
  4. Step 4: Simplify right side
    2,822.40x = 6,088,287.76
  5. Step 5: Solve for x
    x = 6,088,287.76/2,822.40
  6. Step 6: Final answer
    x = 2,157.13

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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.