Home / 8,785.39-13,178.09-2,211.53

Finding the Fourth Proportional to 8,785.39, 13,178.09 and 2,211.53

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Solution

The fourth proportional to 8,785.39, 13,178.09 and 2,211.53 is: 3,317.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,785.39 : 13,178.09 = 2,211.53 : x
  2. Step 2: Convert to fraction form
    8,785.39/13,178.09 = 2,211.53/x
  3. Step 3: Cross multiply
    8,785.39x = 13,178.09 × 2,211.53
  4. Step 4: Simplify right side
    8,785.39x = 29,143,681.02
  5. Step 5: Solve for x
    x = 29,143,681.02/8,785.39
  6. Step 6: Final answer
    x = 3,317.29

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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.