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Finding the Fourth Proportional to 8,535.67, 12,803.60 and 2,988.99

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Solution

The fourth proportional to 8,535.67, 12,803.60 and 2,988.99 is: 4,483.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,535.67 : 12,803.60 = 2,988.99 : x
  2. Step 2: Convert to fraction form
    8,535.67/12,803.60 = 2,988.99/x
  3. Step 3: Cross multiply
    8,535.67x = 12,803.60 × 2,988.99
  4. Step 4: Simplify right side
    8,535.67x = 38,269,839.84
  5. Step 5: Solve for x
    x = 38,269,839.84/8,535.67
  6. Step 6: Final answer
    x = 4,483.52

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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.