Home / 5,628.17-7,767.14-3,390.75

Finding the Fourth Proportional to 5,628.17, 7,767.14 and 3,390.75

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Solution

The fourth proportional to 5,628.17, 7,767.14 and 3,390.75 is: 4,679.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.17 : 7,767.14 = 3,390.75 : x
  2. Step 2: Convert to fraction form
    5,628.17/7,767.14 = 3,390.75/x
  3. Step 3: Cross multiply
    5,628.17x = 7,767.14 × 3,390.75
  4. Step 4: Simplify right side
    5,628.17x = 26,336,429.96
  5. Step 5: Solve for x
    x = 26,336,429.96/5,628.17
  6. Step 6: Final answer
    x = 4,679.39

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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.