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Finding the Fourth Proportional to 8,368.68, 12,559.01 and 3,689.85

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Solution

The fourth proportional to 8,368.68, 12,559.01 and 3,689.85 is: 5,537.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,368.68 : 12,559.01 = 3,689.85 : x
  2. Step 2: Convert to fraction form
    8,368.68/12,559.01 = 3,689.85/x
  3. Step 3: Cross multiply
    8,368.68x = 12,559.01 × 3,689.85
  4. Step 4: Simplify right side
    8,368.68x = 46,340,844.60
  5. Step 5: Solve for x
    x = 46,340,844.60/8,368.68
  6. Step 6: Final answer
    x = 5,537.41

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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.