Home / 7,215.20-10,835.60-5,269.60

Finding the Fourth Proportional to 7,215.20, 10,835.60 and 5,269.60

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Solution

The fourth proportional to 7,215.20, 10,835.60 and 5,269.60 is: 7,913.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,215.20 : 10,835.60 = 5,269.60 : x
  2. Step 2: Convert to fraction form
    7,215.20/10,835.60 = 5,269.60/x
  3. Step 3: Cross multiply
    7,215.20x = 10,835.60 × 5,269.60
  4. Step 4: Simplify right side
    7,215.20x = 57,099,277.76
  5. Step 5: Solve for x
    x = 57,099,277.76/7,215.20
  6. Step 6: Final answer
    x = 7,913.75

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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.