Home / 2,011.28-3,017.40-1,087.76

Finding the Fourth Proportional to 2,011.28, 3,017.40 and 1,087.76

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Solution

The fourth proportional to 2,011.28, 3,017.40 and 1,087.76 is: 1,631.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,011.28 : 3,017.40 = 1,087.76 : x
  2. Step 2: Convert to fraction form
    2,011.28/3,017.40 = 1,087.76/x
  3. Step 3: Cross multiply
    2,011.28x = 3,017.40 × 1,087.76
  4. Step 4: Simplify right side
    2,011.28x = 3,282,207.02
  5. Step 5: Solve for x
    x = 3,282,207.02/2,011.28
  6. Step 6: Final answer
    x = 1,631.90

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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.