Home / 3,696.12-5,100-2,124.30

Finding the Fourth Proportional to 3,696.12, 5,100 and 2,124.30

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Solution

The fourth proportional to 3,696.12, 5,100 and 2,124.30 is: 2,931.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,696.12 : 5,100 = 2,124.30 : x
  2. Step 2: Convert to fraction form
    3,696.12/5,100 = 2,124.30/x
  3. Step 3: Cross multiply
    3,696.12x = 5,100 × 2,124.30
  4. Step 4: Simplify right side
    3,696.12x = 10,833,930
  5. Step 5: Solve for x
    x = 10,833,930/3,696.12
  6. Step 6: Final answer
    x = 2,931.16

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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.