Home / 8,435.08-11,622.90-7,171.72

Finding the Fourth Proportional to 8,435.08, 11,622.90 and 7,171.72

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Solution

The fourth proportional to 8,435.08, 11,622.90 and 7,171.72 is: 9,882.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,435.08 : 11,622.90 = 7,171.72 : x
  2. Step 2: Convert to fraction form
    8,435.08/11,622.90 = 7,171.72/x
  3. Step 3: Cross multiply
    8,435.08x = 11,622.90 × 7,171.72
  4. Step 4: Simplify right side
    8,435.08x = 83,356,184.39
  5. Step 5: Solve for x
    x = 83,356,184.39/8,435.08
  6. Step 6: Final answer
    x = 9,882.09

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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.