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Finding the Fourth Proportional to 7,216.80, 10,818.09 and 2,837.40

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Solution

The fourth proportional to 7,216.80, 10,818.09 and 2,837.40 is: 4,253.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.80 : 10,818.09 = 2,837.40 : x
  2. Step 2: Convert to fraction form
    7,216.80/10,818.09 = 2,837.40/x
  3. Step 3: Cross multiply
    7,216.80x = 10,818.09 × 2,837.40
  4. Step 4: Simplify right side
    7,216.80x = 30,695,248.57
  5. Step 5: Solve for x
    x = 30,695,248.57/7,216.80
  6. Step 6: Final answer
    x = 4,253.30

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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.