Home / 2,290.32-3,160.64-1,242.38

Finding the Fourth Proportional to 2,290.32, 3,160.64 and 1,242.38

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Solution

The fourth proportional to 2,290.32, 3,160.64 and 1,242.38 is: 1,714.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.32 : 3,160.64 = 1,242.38 : x
  2. Step 2: Convert to fraction form
    2,290.32/3,160.64 = 1,242.38/x
  3. Step 3: Cross multiply
    2,290.32x = 3,160.64 × 1,242.38
  4. Step 4: Simplify right side
    2,290.32x = 3,926,715.92
  5. Step 5: Solve for x
    x = 3,926,715.92/2,290.32
  6. Step 6: Final answer
    x = 1,714.48

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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.