Home / 9,318.15-12,856.15-5,338.49

Finding the Fourth Proportional to 9,318.15, 12,856.15 and 5,338.49

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Solution

The fourth proportional to 9,318.15, 12,856.15 and 5,338.49 is: 7,365.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.15 : 12,856.15 = 5,338.49 : x
  2. Step 2: Convert to fraction form
    9,318.15/12,856.15 = 5,338.49/x
  3. Step 3: Cross multiply
    9,318.15x = 12,856.15 × 5,338.49
  4. Step 4: Simplify right side
    9,318.15x = 68,632,428.21
  5. Step 5: Solve for x
    x = 68,632,428.21/9,318.15
  6. Step 6: Final answer
    x = 7,365.46

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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.