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Finding the Fourth Proportional to 8,775.70, 12,109.06 and 4,998.94

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Solution

The fourth proportional to 8,775.70, 12,109.06 and 4,998.94 is: 6,897.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,775.70 : 12,109.06 = 4,998.94 : x
  2. Step 2: Convert to fraction form
    8,775.70/12,109.06 = 4,998.94/x
  3. Step 3: Cross multiply
    8,775.70x = 12,109.06 × 4,998.94
  4. Step 4: Simplify right side
    8,775.70x = 60,532,464.40
  5. Step 5: Solve for x
    x = 60,532,464.40/8,775.70
  6. Step 6: Final answer
    x = 6,897.74

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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.