Home / 2,805.24-4,188.08-2,143.63

Finding the Fourth Proportional to 2,805.24, 4,188.08 and 2,143.63

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Solution

The fourth proportional to 2,805.24, 4,188.08 and 2,143.63 is: 3,200.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,805.24 : 4,188.08 = 2,143.63 : x
  2. Step 2: Convert to fraction form
    2,805.24/4,188.08 = 2,143.63/x
  3. Step 3: Cross multiply
    2,805.24x = 4,188.08 × 2,143.63
  4. Step 4: Simplify right side
    2,805.24x = 8,977,662.27
  5. Step 5: Solve for x
    x = 8,977,662.27/2,805.24
  6. Step 6: Final answer
    x = 3,200.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.