Home / 5,421.06-8,132.67-2,647.76

Finding the Fourth Proportional to 5,421.06, 8,132.67 and 2,647.76

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Solution

The fourth proportional to 5,421.06, 8,132.67 and 2,647.76 is: 3,972.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,421.06 : 8,132.67 = 2,647.76 : x
  2. Step 2: Convert to fraction form
    5,421.06/8,132.67 = 2,647.76/x
  3. Step 3: Cross multiply
    5,421.06x = 8,132.67 × 2,647.76
  4. Step 4: Simplify right side
    5,421.06x = 21,533,317.66
  5. Step 5: Solve for x
    x = 21,533,317.66/5,421.06
  6. Step 6: Final answer
    x = 3,972.16

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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.