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Finding the Fourth Proportional to 8,528.72, 12,776.08 and 6,776.68

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Solution

The fourth proportional to 8,528.72, 12,776.08 and 6,776.68 is: 10,151.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,528.72 : 12,776.08 = 6,776.68 : x
  2. Step 2: Convert to fraction form
    8,528.72/12,776.08 = 6,776.68/x
  3. Step 3: Cross multiply
    8,528.72x = 12,776.08 × 6,776.68
  4. Step 4: Simplify right side
    8,528.72x = 86,579,405.81
  5. Step 5: Solve for x
    x = 86,579,405.81/8,528.72
  6. Step 6: Final answer
    x = 10,151.51

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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.