Home / 2,187.12-3,014.88-1,619.04

Finding the Fourth Proportional to 2,187.12, 3,014.88 and 1,619.04

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Solution

The fourth proportional to 2,187.12, 3,014.88 and 1,619.04 is: 2,231.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,187.12 : 3,014.88 = 1,619.04 : x
  2. Step 2: Convert to fraction form
    2,187.12/3,014.88 = 1,619.04/x
  3. Step 3: Cross multiply
    2,187.12x = 3,014.88 × 1,619.04
  4. Step 4: Simplify right side
    2,187.12x = 4,881,211.32
  5. Step 5: Solve for x
    x = 4,881,211.32/2,187.12
  6. Step 6: Final answer
    x = 2,231.80

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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.