Home / 5,009.13-6,911.78-3,120.41

Finding the Fourth Proportional to 5,009.13, 6,911.78 and 3,120.41

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Solution

The fourth proportional to 5,009.13, 6,911.78 and 3,120.41 is: 4,305.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,009.13 : 6,911.78 = 3,120.41 : x
  2. Step 2: Convert to fraction form
    5,009.13/6,911.78 = 3,120.41/x
  3. Step 3: Cross multiply
    5,009.13x = 6,911.78 × 3,120.41
  4. Step 4: Simplify right side
    5,009.13x = 21,567,537.27
  5. Step 5: Solve for x
    x = 21,567,537.27/5,009.13
  6. Step 6: Final answer
    x = 4,305.65

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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.