Home / 2,119.10-2,924.35-1,187.58

Finding the Fourth Proportional to 2,119.10, 2,924.35 and 1,187.58

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Solution

The fourth proportional to 2,119.10, 2,924.35 and 1,187.58 is: 1,638.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,119.10 : 2,924.35 = 1,187.58 : x
  2. Step 2: Convert to fraction form
    2,119.10/2,924.35 = 1,187.58/x
  3. Step 3: Cross multiply
    2,119.10x = 2,924.35 × 1,187.58
  4. Step 4: Simplify right side
    2,119.10x = 3,472,899.57
  5. Step 5: Solve for x
    x = 3,472,899.57/2,119.10
  6. Step 6: Final answer
    x = 1,638.86

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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.