Home / 8,931.20-12,317.94-5,744.86

Finding the Fourth Proportional to 8,931.20, 12,317.94 and 5,744.86

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Solution

The fourth proportional to 8,931.20, 12,317.94 and 5,744.86 is: 7,923.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,931.20 : 12,317.94 = 5,744.86 : x
  2. Step 2: Convert to fraction form
    8,931.20/12,317.94 = 5,744.86/x
  3. Step 3: Cross multiply
    8,931.20x = 12,317.94 × 5,744.86
  4. Step 4: Simplify right side
    8,931.20x = 70,764,809.99
  5. Step 5: Solve for x
    x = 70,764,809.99/8,931.20
  6. Step 6: Final answer
    x = 7,923.33

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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.