Home / 7,405.17-11,121.86-4,291.41

Finding the Fourth Proportional to 7,405.17, 11,121.86 and 4,291.41

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Solution

The fourth proportional to 7,405.17, 11,121.86 and 4,291.41 is: 6,445.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,405.17 : 11,121.86 = 4,291.41 : x
  2. Step 2: Convert to fraction form
    7,405.17/11,121.86 = 4,291.41/x
  3. Step 3: Cross multiply
    7,405.17x = 11,121.86 × 4,291.41
  4. Step 4: Simplify right side
    7,405.17x = 47,728,461.22
  5. Step 5: Solve for x
    x = 47,728,461.22/7,405.17
  6. Step 6: Final answer
    x = 6,445.29

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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.