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Finding the Fourth Proportional to 7,855.50, 10,835.14 and 5,336.20

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Solution

The fourth proportional to 7,855.50, 10,835.14 and 5,336.20 is: 7,360.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,855.50 : 10,835.14 = 5,336.20 : x
  2. Step 2: Convert to fraction form
    7,855.50/10,835.14 = 5,336.20/x
  3. Step 3: Cross multiply
    7,855.50x = 10,835.14 × 5,336.20
  4. Step 4: Simplify right side
    7,855.50x = 57,818,474.07
  5. Step 5: Solve for x
    x = 57,818,474.07/7,855.50
  6. Step 6: Final answer
    x = 7,360.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.