Home / 4,211.20-5,805.60-2,638.24

Finding the Fourth Proportional to 4,211.20, 5,805.60 and 2,638.24

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Solution

The fourth proportional to 4,211.20, 5,805.60 and 2,638.24 is: 3,637.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,211.20 : 5,805.60 = 2,638.24 : x
  2. Step 2: Convert to fraction form
    4,211.20/5,805.60 = 2,638.24/x
  3. Step 3: Cross multiply
    4,211.20x = 5,805.60 × 2,638.24
  4. Step 4: Simplify right side
    4,211.20x = 15,316,566.14
  5. Step 5: Solve for x
    x = 15,316,566.14/4,211.20
  6. Step 6: Final answer
    x = 3,637.10

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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.