Home / 2,820.56-4,230.02-1,088.78

Finding the Fourth Proportional to 2,820.56, 4,230.02 and 1,088.78

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Solution

The fourth proportional to 2,820.56, 4,230.02 and 1,088.78 is: 1,632.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.56 : 4,230.02 = 1,088.78 : x
  2. Step 2: Convert to fraction form
    2,820.56/4,230.02 = 1,088.78/x
  3. Step 3: Cross multiply
    2,820.56x = 4,230.02 × 1,088.78
  4. Step 4: Simplify right side
    2,820.56x = 4,605,561.18
  5. Step 5: Solve for x
    x = 4,605,561.18/2,820.56
  6. Step 6: Final answer
    x = 1,632.85

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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.