Home / 2,811.60-4,210.56-1,943.28

Finding the Fourth Proportional to 2,811.60, 4,210.56 and 1,943.28

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Solution

The fourth proportional to 2,811.60, 4,210.56 and 1,943.28 is: 2,910.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,811.60 : 4,210.56 = 1,943.28 : x
  2. Step 2: Convert to fraction form
    2,811.60/4,210.56 = 1,943.28/x
  3. Step 3: Cross multiply
    2,811.60x = 4,210.56 × 1,943.28
  4. Step 4: Simplify right side
    2,811.60x = 8,182,297.04
  5. Step 5: Solve for x
    x = 8,182,297.04/2,811.60
  6. Step 6: Final answer
    x = 2,910.19

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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.