Home / 4,286.88-6,424.56-1,688.40

Finding the Fourth Proportional to 4,286.88, 6,424.56 and 1,688.40

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Solution

The fourth proportional to 4,286.88, 6,424.56 and 1,688.40 is: 2,530.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,286.88 : 6,424.56 = 1,688.40 : x
  2. Step 2: Convert to fraction form
    4,286.88/6,424.56 = 1,688.40/x
  3. Step 3: Cross multiply
    4,286.88x = 6,424.56 × 1,688.40
  4. Step 4: Simplify right side
    4,286.88x = 10,847,227.10
  5. Step 5: Solve for x
    x = 10,847,227.10/4,286.88
  6. Step 6: Final answer
    x = 2,530.33

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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.