Home / 6,211.12-9,308.40-5,429.20

Finding the Fourth Proportional to 6,211.12, 9,308.40 and 5,429.20

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Solution

The fourth proportional to 6,211.12, 9,308.40 and 5,429.20 is: 8,136.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,211.12 : 9,308.40 = 5,429.20 : x
  2. Step 2: Convert to fraction form
    6,211.12/9,308.40 = 5,429.20/x
  3. Step 3: Cross multiply
    6,211.12x = 9,308.40 × 5,429.20
  4. Step 4: Simplify right side
    6,211.12x = 50,537,165.28
  5. Step 5: Solve for x
    x = 50,537,165.28/6,211.12
  6. Step 6: Final answer
    x = 8,136.56

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1.5x scale

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.