Home / 3,087.28-4,631.72-1,238.46

Finding the Fourth Proportional to 3,087.28, 4,631.72 and 1,238.46

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Solution

The fourth proportional to 3,087.28, 4,631.72 and 1,238.46 is: 1,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,087.28 : 4,631.72 = 1,238.46 : x
  2. Step 2: Convert to fraction form
    3,087.28/4,631.72 = 1,238.46/x
  3. Step 3: Cross multiply
    3,087.28x = 4,631.72 × 1,238.46
  4. Step 4: Simplify right side
    3,087.28x = 5,736,199.95
  5. Step 5: Solve for x
    x = 5,736,199.95/3,087.28
  6. Step 6: Final answer
    x = 1,858.01

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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.