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Finding the Fourth Proportional to 8,676.56, 12,944.98 and 7,579.28

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Solution

The fourth proportional to 8,676.56, 12,944.98 and 7,579.28 is: 11,307.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,676.56 : 12,944.98 = 7,579.28 : x
  2. Step 2: Convert to fraction form
    8,676.56/12,944.98 = 7,579.28/x
  3. Step 3: Cross multiply
    8,676.56x = 12,944.98 × 7,579.28
  4. Step 4: Simplify right side
    8,676.56x = 98,113,628.01
  5. Step 5: Solve for x
    x = 98,113,628.01/8,676.56
  6. Step 6: Final answer
    x = 11,307.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.