Home / 8,221.08-11,342.30-4,681.78

Finding the Fourth Proportional to 8,221.08, 11,342.30 and 4,681.78

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Solution

The fourth proportional to 8,221.08, 11,342.30 and 4,681.78 is: 6,459.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,221.08 : 11,342.30 = 4,681.78 : x
  2. Step 2: Convert to fraction form
    8,221.08/11,342.30 = 4,681.78/x
  3. Step 3: Cross multiply
    8,221.08x = 11,342.30 × 4,681.78
  4. Step 4: Simplify right side
    8,221.08x = 53,102,153.29
  5. Step 5: Solve for x
    x = 53,102,153.29/8,221.08
  6. Step 6: Final answer
    x = 6,459.27

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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.