Home / 2,872.72-4,303.88-2,215.64

Finding the Fourth Proportional to 2,872.72, 4,303.88 and 2,215.64

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Solution

The fourth proportional to 2,872.72, 4,303.88 and 2,215.64 is: 3,319.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,872.72 : 4,303.88 = 2,215.64 : x
  2. Step 2: Convert to fraction form
    2,872.72/4,303.88 = 2,215.64/x
  3. Step 3: Cross multiply
    2,872.72x = 4,303.88 × 2,215.64
  4. Step 4: Simplify right side
    2,872.72x = 9,535,848.68
  5. Step 5: Solve for x
    x = 9,535,848.68/2,872.72
  6. Step 6: Final answer
    x = 3,319.45

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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.