Home / 5,628.34-7,767.12-3,390.31

Finding the Fourth Proportional to 5,628.34, 7,767.12 and 3,390.31

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Solution

The fourth proportional to 5,628.34, 7,767.12 and 3,390.31 is: 4,678.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,628.34 : 7,767.12 = 3,390.31 : x
  2. Step 2: Convert to fraction form
    5,628.34/7,767.12 = 3,390.31/x
  3. Step 3: Cross multiply
    5,628.34x = 7,767.12 × 3,390.31
  4. Step 4: Simplify right side
    5,628.34x = 26,332,944.61
  5. Step 5: Solve for x
    x = 26,332,944.61/5,628.34
  6. Step 6: Final answer
    x = 4,678.63

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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.