Home / 5,357.80-8,031.30-3,165.40

Finding the Fourth Proportional to 5,357.80, 8,031.30 and 3,165.40

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Solution

The fourth proportional to 5,357.80, 8,031.30 and 3,165.40 is: 4,744.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,357.80 : 8,031.30 = 3,165.40 : x
  2. Step 2: Convert to fraction form
    5,357.80/8,031.30 = 3,165.40/x
  3. Step 3: Cross multiply
    5,357.80x = 8,031.30 × 3,165.40
  4. Step 4: Simplify right side
    5,357.80x = 25,422,277.02
  5. Step 5: Solve for x
    x = 25,422,277.02/5,357.80
  6. Step 6: Final answer
    x = 4,744.91

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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.