Home / 3,117.18-4,302.16-1,999.38

Finding the Fourth Proportional to 3,117.18, 4,302.16 and 1,999.38

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Solution

The fourth proportional to 3,117.18, 4,302.16 and 1,999.38 is: 2,759.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,117.18 : 4,302.16 = 1,999.38 : x
  2. Step 2: Convert to fraction form
    3,117.18/4,302.16 = 1,999.38/x
  3. Step 3: Cross multiply
    3,117.18x = 4,302.16 × 1,999.38
  4. Step 4: Simplify right side
    3,117.18x = 8,601,675.04
  5. Step 5: Solve for x
    x = 8,601,675.04/3,117.18
  6. Step 6: Final answer
    x = 2,759.44

Related Problems

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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.