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Finding the Fourth Proportional to 5,331.90, 7,985.49 and 5,147.34

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Solution

The fourth proportional to 5,331.90, 7,985.49 and 5,147.34 is: 7,709.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,331.90 : 7,985.49 = 5,147.34 : x
  2. Step 2: Convert to fraction form
    5,331.90/7,985.49 = 5,147.34/x
  3. Step 3: Cross multiply
    5,331.90x = 7,985.49 × 5,147.34
  4. Step 4: Simplify right side
    5,331.90x = 41,104,032.10
  5. Step 5: Solve for x
    x = 41,104,032.10/5,331.90
  6. Step 6: Final answer
    x = 7,709.08

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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.