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Finding the Fourth Proportional to 5,661.78, 8,494.98 and 2,539.68

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Solution

The fourth proportional to 5,661.78, 8,494.98 and 2,539.68 is: 3,810.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,661.78 : 8,494.98 = 2,539.68 : x
  2. Step 2: Convert to fraction form
    5,661.78/8,494.98 = 2,539.68/x
  3. Step 3: Cross multiply
    5,661.78x = 8,494.98 × 2,539.68
  4. Step 4: Simplify right side
    5,661.78x = 21,574,530.81
  5. Step 5: Solve for x
    x = 21,574,530.81/5,661.78
  6. Step 6: Final answer
    x = 3,810.56

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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.