Home / 8,690.57-13,037.24-3,143.35

Finding the Fourth Proportional to 8,690.57, 13,037.24 and 3,143.35

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Solution

The fourth proportional to 8,690.57, 13,037.24 and 3,143.35 is: 4,715.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,690.57 : 13,037.24 = 3,143.35 : x
  2. Step 2: Convert to fraction form
    8,690.57/13,037.24 = 3,143.35/x
  3. Step 3: Cross multiply
    8,690.57x = 13,037.24 × 3,143.35
  4. Step 4: Simplify right side
    8,690.57x = 40,980,608.35
  5. Step 5: Solve for x
    x = 40,980,608.35/8,690.57
  6. Step 6: Final answer
    x = 4,715.53

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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.