Home / 4,239.86-6,356-2,158.70

Finding the Fourth Proportional to 4,239.86, 6,356 and 2,158.70

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Solution

The fourth proportional to 4,239.86, 6,356 and 2,158.70 is: 3,236.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,239.86 : 6,356 = 2,158.70 : x
  2. Step 2: Convert to fraction form
    4,239.86/6,356 = 2,158.70/x
  3. Step 3: Cross multiply
    4,239.86x = 6,356 × 2,158.70
  4. Step 4: Simplify right side
    4,239.86x = 13,720,697.20
  5. Step 5: Solve for x
    x = 13,720,697.20/4,239.86
  6. Step 6: Final answer
    x = 3,236.12

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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.