Home / 8,647.18-12,970.78-3,100.87

Finding the Fourth Proportional to 8,647.18, 12,970.78 and 3,100.87

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Solution

The fourth proportional to 8,647.18, 12,970.78 and 3,100.87 is: 4,651.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,647.18 : 12,970.78 = 3,100.87 : x
  2. Step 2: Convert to fraction form
    8,647.18/12,970.78 = 3,100.87/x
  3. Step 3: Cross multiply
    8,647.18x = 12,970.78 × 3,100.87
  4. Step 4: Simplify right side
    8,647.18x = 40,220,702.58
  5. Step 5: Solve for x
    x = 40,220,702.58/8,647.18
  6. Step 6: Final answer
    x = 4,651.31

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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.