Home / 9,318.28-12,859.20-5,126.50

Finding the Fourth Proportional to 9,318.28, 12,859.20 and 5,126.50

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Solution

The fourth proportional to 9,318.28, 12,859.20 and 5,126.50 is: 7,074.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,318.28 : 12,859.20 = 5,126.50 : x
  2. Step 2: Convert to fraction form
    9,318.28/12,859.20 = 5,126.50/x
  3. Step 3: Cross multiply
    9,318.28x = 12,859.20 × 5,126.50
  4. Step 4: Simplify right side
    9,318.28x = 65,922,688.80
  5. Step 5: Solve for x
    x = 65,922,688.80/9,318.28
  6. Step 6: Final answer
    x = 7,074.56

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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.