Home / 4,279.78-6,420.30-1,814.60

Finding the Fourth Proportional to 4,279.78, 6,420.30 and 1,814.60

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Solution

The fourth proportional to 4,279.78, 6,420.30 and 1,814.60 is: 2,722.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.78 : 6,420.30 = 1,814.60 : x
  2. Step 2: Convert to fraction form
    4,279.78/6,420.30 = 1,814.60/x
  3. Step 3: Cross multiply
    4,279.78x = 6,420.30 × 1,814.60
  4. Step 4: Simplify right side
    4,279.78x = 11,650,276.38
  5. Step 5: Solve for x
    x = 11,650,276.38/4,279.78
  6. Step 6: Final answer
    x = 2,722.17

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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.