Home / 3,715.10-5,128.62-2,968.28

Finding the Fourth Proportional to 3,715.10, 5,128.62 and 2,968.28

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Solution

The fourth proportional to 3,715.10, 5,128.62 and 2,968.28 is: 4,097.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,715.10 : 5,128.62 = 2,968.28 : x
  2. Step 2: Convert to fraction form
    3,715.10/5,128.62 = 2,968.28/x
  3. Step 3: Cross multiply
    3,715.10x = 5,128.62 × 2,968.28
  4. Step 4: Simplify right side
    3,715.10x = 15,223,180.17
  5. Step 5: Solve for x
    x = 15,223,180.17/3,715.10
  6. Step 6: Final answer
    x = 4,097.65

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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.