Home / 4,279.79-6,420.58-1,814.55

Finding the Fourth Proportional to 4,279.79, 6,420.58 and 1,814.55

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Solution

The fourth proportional to 4,279.79, 6,420.58 and 1,814.55 is: 2,722.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.79 : 6,420.58 = 1,814.55 : x
  2. Step 2: Convert to fraction form
    4,279.79/6,420.58 = 1,814.55/x
  3. Step 3: Cross multiply
    4,279.79x = 6,420.58 × 1,814.55
  4. Step 4: Simplify right side
    4,279.79x = 11,650,481.15
  5. Step 5: Solve for x
    x = 11,650,481.15/4,279.79
  6. Step 6: Final answer
    x = 2,722.21

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1.5x scale

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.