Home / 3,112.88-4,655.36-2,768.40

Finding the Fourth Proportional to 3,112.88, 4,655.36 and 2,768.40

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Solution

The fourth proportional to 3,112.88, 4,655.36 and 2,768.40 is: 4,140.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,112.88 : 4,655.36 = 2,768.40 : x
  2. Step 2: Convert to fraction form
    3,112.88/4,655.36 = 2,768.40/x
  3. Step 3: Cross multiply
    3,112.88x = 4,655.36 × 2,768.40
  4. Step 4: Simplify right side
    3,112.88x = 12,887,898.62
  5. Step 5: Solve for x
    x = 12,887,898.62/3,112.88
  6. Step 6: Final answer
    x = 4,140.18

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1.5x scale

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.