Home / 4,215.90-5,817.74-2,447.40

Finding the Fourth Proportional to 4,215.90, 5,817.74 and 2,447.40

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Solution

The fourth proportional to 4,215.90, 5,817.74 and 2,447.40 is: 3,377.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,215.90 : 5,817.74 = 2,447.40 : x
  2. Step 2: Convert to fraction form
    4,215.90/5,817.74 = 2,447.40/x
  3. Step 3: Cross multiply
    4,215.90x = 5,817.74 × 2,447.40
  4. Step 4: Simplify right side
    4,215.90x = 14,238,336.88
  5. Step 5: Solve for x
    x = 14,238,336.88/4,215.90
  6. Step 6: Final answer
    x = 3,377.29

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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.