Home / 2,320.32-3,198.12-1,878.06

Finding the Fourth Proportional to 2,320.32, 3,198.12 and 1,878.06

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Solution

The fourth proportional to 2,320.32, 3,198.12 and 1,878.06 is: 2,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,320.32 : 3,198.12 = 1,878.06 : x
  2. Step 2: Convert to fraction form
    2,320.32/3,198.12 = 1,878.06/x
  3. Step 3: Cross multiply
    2,320.32x = 3,198.12 × 1,878.06
  4. Step 4: Simplify right side
    2,320.32x = 6,006,261.25
  5. Step 5: Solve for x
    x = 6,006,261.25/2,320.32
  6. Step 6: Final answer
    x = 2,588.55

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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.