Home / 2,688.84-4,025.97-1,387.56

Finding the Fourth Proportional to 2,688.84, 4,025.97 and 1,387.56

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Solution

The fourth proportional to 2,688.84, 4,025.97 and 1,387.56 is: 2,077.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.84 : 4,025.97 = 1,387.56 : x
  2. Step 2: Convert to fraction form
    2,688.84/4,025.97 = 1,387.56/x
  3. Step 3: Cross multiply
    2,688.84x = 4,025.97 × 1,387.56
  4. Step 4: Simplify right side
    2,688.84x = 5,586,274.93
  5. Step 5: Solve for x
    x = 5,586,274.93/2,688.84
  6. Step 6: Final answer
    x = 2,077.58

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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.