Home / 7,905.80-11,865.51-4,399.31

Finding the Fourth Proportional to 7,905.80, 11,865.51 and 4,399.31

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Solution

The fourth proportional to 7,905.80, 11,865.51 and 4,399.31 is: 6,602.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.80 : 11,865.51 = 4,399.31 : x
  2. Step 2: Convert to fraction form
    7,905.80/11,865.51 = 4,399.31/x
  3. Step 3: Cross multiply
    7,905.80x = 11,865.51 × 4,399.31
  4. Step 4: Simplify right side
    7,905.80x = 52,199,997.47
  5. Step 5: Solve for x
    x = 52,199,997.47/7,905.80
  6. Step 6: Final answer
    x = 6,602.75

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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.