Home / 8,310.72-11,484-7,905.76

Finding the Fourth Proportional to 8,310.72, 11,484 and 7,905.76

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Solution

The fourth proportional to 8,310.72, 11,484 and 7,905.76 is: 10,924.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,310.72 : 11,484 = 7,905.76 : x
  2. Step 2: Convert to fraction form
    8,310.72/11,484 = 7,905.76/x
  3. Step 3: Cross multiply
    8,310.72x = 11,484 × 7,905.76
  4. Step 4: Simplify right side
    8,310.72x = 90,789,747.84
  5. Step 5: Solve for x
    x = 90,789,747.84/8,310.72
  6. Step 6: Final answer
    x = 10,924.41

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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.