Home / 4,240.22-6,360.64-1,318.72

Finding the Fourth Proportional to 4,240.22, 6,360.64 and 1,318.72

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Solution

The fourth proportional to 4,240.22, 6,360.64 and 1,318.72 is: 1,978.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,240.22 : 6,360.64 = 1,318.72 : x
  2. Step 2: Convert to fraction form
    4,240.22/6,360.64 = 1,318.72/x
  3. Step 3: Cross multiply
    4,240.22x = 6,360.64 × 1,318.72
  4. Step 4: Simplify right side
    4,240.22x = 8,387,903.18
  5. Step 5: Solve for x
    x = 8,387,903.18/4,240.22
  6. Step 6: Final answer
    x = 1,978.18

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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.