Home / 5,420.17-8,130.63-2,299.82

Finding the Fourth Proportional to 5,420.17, 8,130.63 and 2,299.82

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Solution

The fourth proportional to 5,420.17, 8,130.63 and 2,299.82 is: 3,449.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,420.17 : 8,130.63 = 2,299.82 : x
  2. Step 2: Convert to fraction form
    5,420.17/8,130.63 = 2,299.82/x
  3. Step 3: Cross multiply
    5,420.17x = 8,130.63 × 2,299.82
  4. Step 4: Simplify right side
    5,420.17x = 18,698,963.39
  5. Step 5: Solve for x
    x = 18,698,963.39/5,420.17
  6. Step 6: Final answer
    x = 3,449.89

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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.