Home / 3,215.28-4,809.72-2,567.28

Finding the Fourth Proportional to 3,215.28, 4,809.72 and 2,567.28

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Solution

The fourth proportional to 3,215.28, 4,809.72 and 2,567.28 is: 3,840.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,215.28 : 4,809.72 = 2,567.28 : x
  2. Step 2: Convert to fraction form
    3,215.28/4,809.72 = 2,567.28/x
  3. Step 3: Cross multiply
    3,215.28x = 4,809.72 × 2,567.28
  4. Step 4: Simplify right side
    3,215.28x = 12,347,897.96
  5. Step 5: Solve for x
    x = 12,347,897.96/3,215.28
  6. Step 6: Final answer
    x = 3,840.38

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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.