Home / 2,118.10-2,922.97-1,186.58

Finding the Fourth Proportional to 2,118.10, 2,922.97 and 1,186.58

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Solution

The fourth proportional to 2,118.10, 2,922.97 and 1,186.58 is: 1,637.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,118.10 : 2,922.97 = 1,186.58 : x
  2. Step 2: Convert to fraction form
    2,118.10/2,922.97 = 1,186.58/x
  3. Step 3: Cross multiply
    2,118.10x = 2,922.97 × 1,186.58
  4. Step 4: Simplify right side
    2,118.10x = 3,468,337.74
  5. Step 5: Solve for x
    x = 3,468,337.74/2,118.10
  6. Step 6: Final answer
    x = 1,637.48

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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.