Home / 3,478.55-5,212.35-2,689.83

Finding the Fourth Proportional to 3,478.55, 5,212.35 and 2,689.83

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Solution

The fourth proportional to 3,478.55, 5,212.35 and 2,689.83 is: 4,030.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,478.55 : 5,212.35 = 2,689.83 : x
  2. Step 2: Convert to fraction form
    3,478.55/5,212.35 = 2,689.83/x
  3. Step 3: Cross multiply
    3,478.55x = 5,212.35 × 2,689.83
  4. Step 4: Simplify right side
    3,478.55x = 14,020,322.79
  5. Step 5: Solve for x
    x = 14,020,322.79/3,478.55
  6. Step 6: Final answer
    x = 4,030.51

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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.