Home / 8,109.36-11,193.96-5,315.04

Finding the Fourth Proportional to 8,109.36, 11,193.96 and 5,315.04

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Solution

The fourth proportional to 8,109.36, 11,193.96 and 5,315.04 is: 7,336.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,109.36 : 11,193.96 = 5,315.04 : x
  2. Step 2: Convert to fraction form
    8,109.36/11,193.96 = 5,315.04/x
  3. Step 3: Cross multiply
    8,109.36x = 11,193.96 × 5,315.04
  4. Step 4: Simplify right side
    8,109.36x = 59,496,345.16
  5. Step 5: Solve for x
    x = 59,496,345.16/8,109.36
  6. Step 6: Final answer
    x = 7,336.75

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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.