Home / 8,813.21-13,211.71-3,812.45

Finding the Fourth Proportional to 8,813.21, 13,211.71 and 3,812.45

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Solution

The fourth proportional to 8,813.21, 13,211.71 and 3,812.45 is: 5,715.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,813.21 : 13,211.71 = 3,812.45 : x
  2. Step 2: Convert to fraction form
    8,813.21/13,211.71 = 3,812.45/x
  3. Step 3: Cross multiply
    8,813.21x = 13,211.71 × 3,812.45
  4. Step 4: Simplify right side
    8,813.21x = 50,368,982.52
  5. Step 5: Solve for x
    x = 50,368,982.52/8,813.21
  6. Step 6: Final answer
    x = 5,715.17

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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.