Home / 2,920.22-4,378.70-1,186.82

Finding the Fourth Proportional to 2,920.22, 4,378.70 and 1,186.82

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Solution

The fourth proportional to 2,920.22, 4,378.70 and 1,186.82 is: 1,779.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.22 : 4,378.70 = 1,186.82 : x
  2. Step 2: Convert to fraction form
    2,920.22/4,378.70 = 1,186.82/x
  3. Step 3: Cross multiply
    2,920.22x = 4,378.70 × 1,186.82
  4. Step 4: Simplify right side
    2,920.22x = 5,196,728.73
  5. Step 5: Solve for x
    x = 5,196,728.73/2,920.22
  6. Step 6: Final answer
    x = 1,779.57

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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.