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Finding the Fourth Proportional to 7,818.51, 10,788.57 and 6,229.20

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Solution

The fourth proportional to 7,818.51, 10,788.57 and 6,229.20 is: 8,595.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,818.51 : 10,788.57 = 6,229.20 : x
  2. Step 2: Convert to fraction form
    7,818.51/10,788.57 = 6,229.20/x
  3. Step 3: Cross multiply
    7,818.51x = 10,788.57 × 6,229.20
  4. Step 4: Simplify right side
    7,818.51x = 67,204,160.24
  5. Step 5: Solve for x
    x = 67,204,160.24/7,818.51
  6. Step 6: Final answer
    x = 8,595.52

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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.