Home / 8,431.80-12,649.49-3,237.63

Finding the Fourth Proportional to 8,431.80, 12,649.49 and 3,237.63

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Solution

The fourth proportional to 8,431.80, 12,649.49 and 3,237.63 is: 4,857.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,431.80 : 12,649.49 = 3,237.63 : x
  2. Step 2: Convert to fraction form
    8,431.80/12,649.49 = 3,237.63/x
  3. Step 3: Cross multiply
    8,431.80x = 12,649.49 × 3,237.63
  4. Step 4: Simplify right side
    8,431.80x = 40,954,368.31
  5. Step 5: Solve for x
    x = 40,954,368.31/8,431.80
  6. Step 6: Final answer
    x = 4,857.13

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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.