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Finding the Fourth Proportional to 5,739.51, 8,611.70 and 3,139.41

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Solution

The fourth proportional to 5,739.51, 8,611.70 and 3,139.41 is: 4,710.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,739.51 : 8,611.70 = 3,139.41 : x
  2. Step 2: Convert to fraction form
    5,739.51/8,611.70 = 3,139.41/x
  3. Step 3: Cross multiply
    5,739.51x = 8,611.70 × 3,139.41
  4. Step 4: Simplify right side
    5,739.51x = 27,035,641.40
  5. Step 5: Solve for x
    x = 27,035,641.40/5,739.51
  6. Step 6: Final answer
    x = 4,710.44

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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.