Home / 7,931.49-11,894.81-6,809.91

Finding the Fourth Proportional to 7,931.49, 11,894.81 and 6,809.91

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Solution

The fourth proportional to 7,931.49, 11,894.81 and 6,809.91 is: 10,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.49 : 11,894.81 = 6,809.91 : x
  2. Step 2: Convert to fraction form
    7,931.49/11,894.81 = 6,809.91/x
  3. Step 3: Cross multiply
    7,931.49x = 11,894.81 × 6,809.91
  4. Step 4: Simplify right side
    7,931.49x = 81,002,551.52
  5. Step 5: Solve for x
    x = 81,002,551.52/7,931.49
  6. Step 6: Final answer
    x = 10,212.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.