Home / 8,690.67-13,038.03-3,142.98

Finding the Fourth Proportional to 8,690.67, 13,038.03 and 3,142.98

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Solution

The fourth proportional to 8,690.67, 13,038.03 and 3,142.98 is: 4,715.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.67 : 13,038.03 = 3,142.98 : x
  2. Step 2: Convert to fraction form
    8,690.67/13,038.03 = 3,142.98/x
  3. Step 3: Cross multiply
    8,690.67x = 13,038.03 × 3,142.98
  4. Step 4: Simplify right side
    8,690.67x = 40,978,267.53
  5. Step 5: Solve for x
    x = 40,978,267.53/8,690.67
  6. Step 6: Final answer
    x = 4,715.20

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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.