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Finding the Fourth Proportional to 2,875.32, 4,308.90 and 2,223

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Solution

The fourth proportional to 2,875.32, 4,308.90 and 2,223 is: 3,331.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,875.32 : 4,308.90 = 2,223 : x
  2. Step 2: Convert to fraction form
    2,875.32/4,308.90 = 2,223/x
  3. Step 3: Cross multiply
    2,875.32x = 4,308.90 × 2,223
  4. Step 4: Simplify right side
    2,875.32x = 9,578,684.70
  5. Step 5: Solve for x
    x = 9,578,684.70/2,875.32
  6. Step 6: Final answer
    x = 3,331.35

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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.