Home / 3,161.34-4,739.45-2,815.35

Finding the Fourth Proportional to 3,161.34, 4,739.45 and 2,815.35

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Solution

The fourth proportional to 3,161.34, 4,739.45 and 2,815.35 is: 4,220.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,161.34 : 4,739.45 = 2,815.35 : x
  2. Step 2: Convert to fraction form
    3,161.34/4,739.45 = 2,815.35/x
  3. Step 3: Cross multiply
    3,161.34x = 4,739.45 × 2,815.35
  4. Step 4: Simplify right side
    3,161.34x = 13,343,178.71
  5. Step 5: Solve for x
    x = 13,343,178.71/3,161.34
  6. Step 6: Final answer
    x = 4,220.74

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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.