Home / 4,215.72-5,817.60-2,447.28

Finding the Fourth Proportional to 4,215.72, 5,817.60 and 2,447.28

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Solution

The fourth proportional to 4,215.72, 5,817.60 and 2,447.28 is: 3,377.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.72 : 5,817.60 = 2,447.28 : x
  2. Step 2: Convert to fraction form
    4,215.72/5,817.60 = 2,447.28/x
  3. Step 3: Cross multiply
    4,215.72x = 5,817.60 × 2,447.28
  4. Step 4: Simplify right side
    4,215.72x = 14,237,296.13
  5. Step 5: Solve for x
    x = 14,237,296.13/4,215.72
  6. Step 6: Final answer
    x = 3,377.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.