Home / 4,279.68-6,420.48-2,431.68

Finding the Fourth Proportional to 4,279.68, 6,420.48 and 2,431.68

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Solution

The fourth proportional to 4,279.68, 6,420.48 and 2,431.68 is: 3,648.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.68 : 6,420.48 = 2,431.68 : x
  2. Step 2: Convert to fraction form
    4,279.68/6,420.48 = 2,431.68/x
  3. Step 3: Cross multiply
    4,279.68x = 6,420.48 × 2,431.68
  4. Step 4: Simplify right side
    4,279.68x = 15,612,552.81
  5. Step 5: Solve for x
    x = 15,612,552.81/4,279.68
  6. Step 6: Final answer
    x = 3,648.07

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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.