Home / 4,641.63-6,406.90-3,131.38

Finding the Fourth Proportional to 4,641.63, 6,406.90 and 3,131.38

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Solution

The fourth proportional to 4,641.63, 6,406.90 and 3,131.38 is: 4,322.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,641.63 : 6,406.90 = 3,131.38 : x
  2. Step 2: Convert to fraction form
    4,641.63/6,406.90 = 3,131.38/x
  3. Step 3: Cross multiply
    4,641.63x = 6,406.90 × 3,131.38
  4. Step 4: Simplify right side
    4,641.63x = 20,062,435.99
  5. Step 5: Solve for x
    x = 20,062,435.99/4,641.63
  6. Step 6: Final answer
    x = 4,322.28

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Half scale
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Double scale
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.