Home / 4,259.37-6,388.53-1,139.61

Finding the Fourth Proportional to 4,259.37, 6,388.53 and 1,139.61

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Solution

The fourth proportional to 4,259.37, 6,388.53 and 1,139.61 is: 1,709.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.37 : 6,388.53 = 1,139.61 : x
  2. Step 2: Convert to fraction form
    4,259.37/6,388.53 = 1,139.61/x
  3. Step 3: Cross multiply
    4,259.37x = 6,388.53 × 1,139.61
  4. Step 4: Simplify right side
    4,259.37x = 7,280,432.67
  5. Step 5: Solve for x
    x = 7,280,432.67/4,259.37
  6. Step 6: Final answer
    x = 1,709.27

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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.