Home / 3,087.75-4,263.56-2,851.61

Finding the Fourth Proportional to 3,087.75, 4,263.56 and 2,851.61

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Solution

The fourth proportional to 3,087.75, 4,263.56 and 2,851.61 is: 3,937.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.75 : 4,263.56 = 2,851.61 : x
  2. Step 2: Convert to fraction form
    3,087.75/4,263.56 = 2,851.61/x
  3. Step 3: Cross multiply
    3,087.75x = 4,263.56 × 2,851.61
  4. Step 4: Simplify right side
    3,087.75x = 12,158,017.40
  5. Step 5: Solve for x
    x = 12,158,017.40/3,087.75
  6. Step 6: Final answer
    x = 3,937.50

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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.