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Finding the Fourth Proportional to 7,991.55, 11,028.13 and 4,588.47

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Solution

The fourth proportional to 7,991.55, 11,028.13 and 4,588.47 is: 6,331.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,991.55 : 11,028.13 = 4,588.47 : x
  2. Step 2: Convert to fraction form
    7,991.55/11,028.13 = 4,588.47/x
  3. Step 3: Cross multiply
    7,991.55x = 11,028.13 × 4,588.47
  4. Step 4: Simplify right side
    7,991.55x = 50,602,232.19
  5. Step 5: Solve for x
    x = 50,602,232.19/7,991.55
  6. Step 6: Final answer
    x = 6,331.97

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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.