Home / 2,756.12-4,134-2,143.76

Finding the Fourth Proportional to 2,756.12, 4,134 and 2,143.76

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Solution

The fourth proportional to 2,756.12, 4,134 and 2,143.76 is: 3,215.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,756.12 : 4,134 = 2,143.76 : x
  2. Step 2: Convert to fraction form
    2,756.12/4,134 = 2,143.76/x
  3. Step 3: Cross multiply
    2,756.12x = 4,134 × 2,143.76
  4. Step 4: Simplify right side
    2,756.12x = 8,862,303.84
  5. Step 5: Solve for x
    x = 8,862,303.84/2,756.12
  6. Step 6: Final answer
    x = 3,215.50

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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.