Home / 2,179.90-3,008.91-1,434.43

Finding the Fourth Proportional to 2,179.90, 3,008.91 and 1,434.43

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Solution

The fourth proportional to 2,179.90, 3,008.91 and 1,434.43 is: 1,979.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,179.90 : 3,008.91 = 1,434.43 : x
  2. Step 2: Convert to fraction form
    2,179.90/3,008.91 = 1,434.43/x
  3. Step 3: Cross multiply
    2,179.90x = 3,008.91 × 1,434.43
  4. Step 4: Simplify right side
    2,179.90x = 4,316,070.77
  5. Step 5: Solve for x
    x = 4,316,070.77/2,179.90
  6. Step 6: Final answer
    x = 1,979.94

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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.