Home / 8,640.48-12,960.75-2,636.63

Finding the Fourth Proportional to 8,640.48, 12,960.75 and 2,636.63

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Solution

The fourth proportional to 8,640.48, 12,960.75 and 2,636.63 is: 3,954.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,640.48 : 12,960.75 = 2,636.63 : x
  2. Step 2: Convert to fraction form
    8,640.48/12,960.75 = 2,636.63/x
  3. Step 3: Cross multiply
    8,640.48x = 12,960.75 × 2,636.63
  4. Step 4: Simplify right side
    8,640.48x = 34,172,702.27
  5. Step 5: Solve for x
    x = 34,172,702.27/8,640.48
  6. Step 6: Final answer
    x = 3,954.95

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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.