Home / 2,207.63-3,311.40-891.35

Finding the Fourth Proportional to 2,207.63, 3,311.40 and 891.35

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Solution

The fourth proportional to 2,207.63, 3,311.40 and 891.35 is: 1,337.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.63 : 3,311.40 = 891.35 : x
  2. Step 2: Convert to fraction form
    2,207.63/3,311.40 = 891.35/x
  3. Step 3: Cross multiply
    2,207.63x = 3,311.40 × 891.35
  4. Step 4: Simplify right side
    2,207.63x = 2,951,603.77
  5. Step 5: Solve for x
    x = 2,951,603.77/2,207.63
  6. Step 6: Final answer
    x = 1,337.00

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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.