Home / 3,702.10-5,108.61-2,129.89

Finding the Fourth Proportional to 3,702.10, 5,108.61 and 2,129.89

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Solution

The fourth proportional to 3,702.10, 5,108.61 and 2,129.89 is: 2,939.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,702.10 : 5,108.61 = 2,129.89 : x
  2. Step 2: Convert to fraction form
    3,702.10/5,108.61 = 2,129.89/x
  3. Step 3: Cross multiply
    3,702.10x = 5,108.61 × 2,129.89
  4. Step 4: Simplify right side
    3,702.10x = 10,880,777.35
  5. Step 5: Solve for x
    x = 10,880,777.35/3,702.10
  6. Step 6: Final answer
    x = 2,939.08

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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.