Home / 2,832.12-3,907.28-2,087.88

Finding the Fourth Proportional to 2,832.12, 3,907.28 and 2,087.88

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Solution

The fourth proportional to 2,832.12, 3,907.28 and 2,087.88 is: 2,880.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,832.12 : 3,907.28 = 2,087.88 : x
  2. Step 2: Convert to fraction form
    2,832.12/3,907.28 = 2,087.88/x
  3. Step 3: Cross multiply
    2,832.12x = 3,907.28 × 2,087.88
  4. Step 4: Simplify right side
    2,832.12x = 8,157,931.77
  5. Step 5: Solve for x
    x = 8,157,931.77/2,832.12
  6. Step 6: Final answer
    x = 2,880.50

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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.