Home / 4,159.86-6,240.95-1,388.34

Finding the Fourth Proportional to 4,159.86, 6,240.95 and 1,388.34

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Solution

The fourth proportional to 4,159.86, 6,240.95 and 1,388.34 is: 2,082.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,159.86 : 6,240.95 = 1,388.34 : x
  2. Step 2: Convert to fraction form
    4,159.86/6,240.95 = 1,388.34/x
  3. Step 3: Cross multiply
    4,159.86x = 6,240.95 × 1,388.34
  4. Step 4: Simplify right side
    4,159.86x = 8,664,558.79
  5. Step 5: Solve for x
    x = 8,664,558.79/4,159.86
  6. Step 6: Final answer
    x = 2,082.90

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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.