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Finding the Fourth Proportional to 5,809.05, 7,985.76 and 4,998.49

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Solution

The fourth proportional to 5,809.05, 7,985.76 and 4,998.49 is: 6,871.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,809.05 : 7,985.76 = 4,998.49 : x
  2. Step 2: Convert to fraction form
    5,809.05/7,985.76 = 4,998.49/x
  3. Step 3: Cross multiply
    5,809.05x = 7,985.76 × 4,998.49
  4. Step 4: Simplify right side
    5,809.05x = 39,916,736.47
  5. Step 5: Solve for x
    x = 39,916,736.47/5,809.05
  6. Step 6: Final answer
    x = 6,871.47

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.