Home / 2,942.19-4,412.12-1,187.15

Finding the Fourth Proportional to 2,942.19, 4,412.12 and 1,187.15

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Solution

The fourth proportional to 2,942.19, 4,412.12 and 1,187.15 is: 1,780.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,942.19 : 4,412.12 = 1,187.15 : x
  2. Step 2: Convert to fraction form
    2,942.19/4,412.12 = 1,187.15/x
  3. Step 3: Cross multiply
    2,942.19x = 4,412.12 × 1,187.15
  4. Step 4: Simplify right side
    2,942.19x = 5,237,820.26
  5. Step 5: Solve for x
    x = 5,237,820.26/2,942.19
  6. Step 6: Final answer
    x = 1,780.25

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.