Home / 2,145.08-2,959.98-1,213.58

Finding the Fourth Proportional to 2,145.08, 2,959.98 and 1,213.58

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Solution

The fourth proportional to 2,145.08, 2,959.98 and 1,213.58 is: 1,674.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,145.08 : 2,959.98 = 1,213.58 : x
  2. Step 2: Convert to fraction form
    2,145.08/2,959.98 = 1,213.58/x
  3. Step 3: Cross multiply
    2,145.08x = 2,959.98 × 1,213.58
  4. Step 4: Simplify right side
    2,145.08x = 3,592,175.38
  5. Step 5: Solve for x
    x = 3,592,175.38/2,145.08
  6. Step 6: Final answer
    x = 1,674.61

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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.