Home / 7,931.60-11,893.42-2,664.76

Finding the Fourth Proportional to 7,931.60, 11,893.42 and 2,664.76

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Solution

The fourth proportional to 7,931.60, 11,893.42 and 2,664.76 is: 3,995.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,931.60 : 11,893.42 = 2,664.76 : x
  2. Step 2: Convert to fraction form
    7,931.60/11,893.42 = 2,664.76/x
  3. Step 3: Cross multiply
    7,931.60x = 11,893.42 × 2,664.76
  4. Step 4: Simplify right side
    7,931.60x = 31,693,109.88
  5. Step 5: Solve for x
    x = 31,693,109.88/7,931.60
  6. Step 6: Final answer
    x = 3,995.80

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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.