Home / 3,701.32-5,108.28-2,129.40

Finding the Fourth Proportional to 3,701.32, 5,108.28 and 2,129.40

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Solution

The fourth proportional to 3,701.32, 5,108.28 and 2,129.40 is: 2,938.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,701.32 : 5,108.28 = 2,129.40 : x
  2. Step 2: Convert to fraction form
    3,701.32/5,108.28 = 2,129.40/x
  3. Step 3: Cross multiply
    3,701.32x = 5,108.28 × 2,129.40
  4. Step 4: Simplify right side
    3,701.32x = 10,877,571.43
  5. Step 5: Solve for x
    x = 10,877,571.43/3,701.32
  6. Step 6: Final answer
    x = 2,938.84

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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.