Home / 2,902.68-4,007.78-1,785.12

Finding the Fourth Proportional to 2,902.68, 4,007.78 and 1,785.12

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Solution

The fourth proportional to 2,902.68, 4,007.78 and 1,785.12 is: 2,464.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,902.68 : 4,007.78 = 1,785.12 : x
  2. Step 2: Convert to fraction form
    2,902.68/4,007.78 = 1,785.12/x
  3. Step 3: Cross multiply
    2,902.68x = 4,007.78 × 1,785.12
  4. Step 4: Simplify right side
    2,902.68x = 7,154,372.70
  5. Step 5: Solve for x
    x = 7,154,372.70/2,902.68
  6. Step 6: Final answer
    x = 2,464.75

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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.