Home / 3,139.16-4,702.32-1,638.02

Finding the Fourth Proportional to 3,139.16, 4,702.32 and 1,638.02

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Solution

The fourth proportional to 3,139.16, 4,702.32 and 1,638.02 is: 2,453.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,139.16 : 4,702.32 = 1,638.02 : x
  2. Step 2: Convert to fraction form
    3,139.16/4,702.32 = 1,638.02/x
  3. Step 3: Cross multiply
    3,139.16x = 4,702.32 × 1,638.02
  4. Step 4: Simplify right side
    3,139.16x = 7,702,505.96
  5. Step 5: Solve for x
    x = 7,702,505.96/3,139.16
  6. Step 6: Final answer
    x = 2,453.69

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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.