Home / 2,688.03-3,710.13-2,120.52

Finding the Fourth Proportional to 2,688.03, 3,710.13 and 2,120.52

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Solution

The fourth proportional to 2,688.03, 3,710.13 and 2,120.52 is: 2,926.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.03 : 3,710.13 = 2,120.52 : x
  2. Step 2: Convert to fraction form
    2,688.03/3,710.13 = 2,120.52/x
  3. Step 3: Cross multiply
    2,688.03x = 3,710.13 × 2,120.52
  4. Step 4: Simplify right side
    2,688.03x = 7,867,404.87
  5. Step 5: Solve for x
    x = 7,867,404.87/2,688.03
  6. Step 6: Final answer
    x = 2,926.83

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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.