Home / 3,135.48-4,327.65-2,820.18

Finding the Fourth Proportional to 3,135.48, 4,327.65 and 2,820.18

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Solution

The fourth proportional to 3,135.48, 4,327.65 and 2,820.18 is: 3,892.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,135.48 : 4,327.65 = 2,820.18 : x
  2. Step 2: Convert to fraction form
    3,135.48/4,327.65 = 2,820.18/x
  3. Step 3: Cross multiply
    3,135.48x = 4,327.65 × 2,820.18
  4. Step 4: Simplify right side
    3,135.48x = 12,204,751.98
  5. Step 5: Solve for x
    x = 12,204,751.98/3,135.48
  6. Step 6: Final answer
    x = 3,892.47

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1.5x scale

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.