Home / 2,820.02-3,891.48-1,561.04

Finding the Fourth Proportional to 2,820.02, 3,891.48 and 1,561.04

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Solution

The fourth proportional to 2,820.02, 3,891.48 and 1,561.04 is: 2,154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.02 : 3,891.48 = 1,561.04 : x
  2. Step 2: Convert to fraction form
    2,820.02/3,891.48 = 1,561.04/x
  3. Step 3: Cross multiply
    2,820.02x = 3,891.48 × 1,561.04
  4. Step 4: Simplify right side
    2,820.02x = 6,074,736.48
  5. Step 5: Solve for x
    x = 6,074,736.48/2,820.02
  6. Step 6: Final answer
    x = 2,154.15

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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.