Home / 2,820.90-4,233.90-1,435.20

Finding the Fourth Proportional to 2,820.90, 4,233.90 and 1,435.20

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Solution

The fourth proportional to 2,820.90, 4,233.90 and 1,435.20 is: 2,154.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,820.90 : 4,233.90 = 1,435.20 : x
  2. Step 2: Convert to fraction form
    2,820.90/4,233.90 = 1,435.20/x
  3. Step 3: Cross multiply
    2,820.90x = 4,233.90 × 1,435.20
  4. Step 4: Simplify right side
    2,820.90x = 6,076,493.28
  5. Step 5: Solve for x
    x = 6,076,493.28/2,820.90
  6. Step 6: Final answer
    x = 2,154.10

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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.