Home / 4,122.27-5,689.54-2,688.49

Finding the Fourth Proportional to 4,122.27, 5,689.54 and 2,688.49

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Solution

The fourth proportional to 4,122.27, 5,689.54 and 2,688.49 is: 3,710.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,122.27 : 5,689.54 = 2,688.49 : x
  2. Step 2: Convert to fraction form
    4,122.27/5,689.54 = 2,688.49/x
  3. Step 3: Cross multiply
    4,122.27x = 5,689.54 × 2,688.49
  4. Step 4: Simplify right side
    4,122.27x = 15,296,281.87
  5. Step 5: Solve for x
    x = 15,296,281.87/4,122.27
  6. Step 6: Final answer
    x = 3,710.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.