Home / 8,207.88-11,331.54-5,421.48

Finding the Fourth Proportional to 8,207.88, 11,331.54 and 5,421.48

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Solution

The fourth proportional to 8,207.88, 11,331.54 and 5,421.48 is: 7,484.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,207.88 : 11,331.54 = 5,421.48 : x
  2. Step 2: Convert to fraction form
    8,207.88/11,331.54 = 5,421.48/x
  3. Step 3: Cross multiply
    8,207.88x = 11,331.54 × 5,421.48
  4. Step 4: Simplify right side
    8,207.88x = 61,433,717.48
  5. Step 5: Solve for x
    x = 61,433,717.48/8,207.88
  6. Step 6: Final answer
    x = 7,484.72

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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.