Home / 5,871.47-8,102.63-3,218.90

Finding the Fourth Proportional to 5,871.47, 8,102.63 and 3,218.90

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Solution

The fourth proportional to 5,871.47, 8,102.63 and 3,218.90 is: 4,442.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,871.47 : 8,102.63 = 3,218.90 : x
  2. Step 2: Convert to fraction form
    5,871.47/8,102.63 = 3,218.90/x
  3. Step 3: Cross multiply
    5,871.47x = 8,102.63 × 3,218.90
  4. Step 4: Simplify right side
    5,871.47x = 26,081,499.10
  5. Step 5: Solve for x
    x = 26,081,499.10/5,871.47
  6. Step 6: Final answer
    x = 4,442.07

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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.