Home / 2,207.20-3,307.80-1,112.32

Finding the Fourth Proportional to 2,207.20, 3,307.80 and 1,112.32

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Solution

The fourth proportional to 2,207.20, 3,307.80 and 1,112.32 is: 1,666.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,207.20 : 3,307.80 = 1,112.32 : x
  2. Step 2: Convert to fraction form
    2,207.20/3,307.80 = 1,112.32/x
  3. Step 3: Cross multiply
    2,207.20x = 3,307.80 × 1,112.32
  4. Step 4: Simplify right side
    2,207.20x = 3,679,332.10
  5. Step 5: Solve for x
    x = 3,679,332.10/2,207.20
  6. Step 6: Final answer
    x = 1,666.97

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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.