Home / 8,187.12-11,313.51-6,975.15

Finding the Fourth Proportional to 8,187.12, 11,313.51 and 6,975.15

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Solution

The fourth proportional to 8,187.12, 11,313.51 and 6,975.15 is: 9,638.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.12 : 11,313.51 = 6,975.15 : x
  2. Step 2: Convert to fraction form
    8,187.12/11,313.51 = 6,975.15/x
  3. Step 3: Cross multiply
    8,187.12x = 11,313.51 × 6,975.15
  4. Step 4: Simplify right side
    8,187.12x = 78,913,429.28
  5. Step 5: Solve for x
    x = 78,913,429.28/8,187.12
  6. Step 6: Final answer
    x = 9,638.73

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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.