Home / 3,162.24-4,365.12-1,920

Finding the Fourth Proportional to 3,162.24, 4,365.12 and 1,920

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Solution

The fourth proportional to 3,162.24, 4,365.12 and 1,920 is: 2,650.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,162.24 : 4,365.12 = 1,920 : x
  2. Step 2: Convert to fraction form
    3,162.24/4,365.12 = 1,920/x
  3. Step 3: Cross multiply
    3,162.24x = 4,365.12 × 1,920
  4. Step 4: Simplify right side
    3,162.24x = 8,381,030.40
  5. Step 5: Solve for x
    x = 8,381,030.40/3,162.24
  6. Step 6: Final answer
    x = 2,650.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.