Home / 2,920.38-4,376.73-1,188.06

Finding the Fourth Proportional to 2,920.38, 4,376.73 and 1,188.06

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Solution

The fourth proportional to 2,920.38, 4,376.73 and 1,188.06 is: 1,780.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,920.38 : 4,376.73 = 1,188.06 : x
  2. Step 2: Convert to fraction form
    2,920.38/4,376.73 = 1,188.06/x
  3. Step 3: Cross multiply
    2,920.38x = 4,376.73 × 1,188.06
  4. Step 4: Simplify right side
    2,920.38x = 5,199,817.84
  5. Step 5: Solve for x
    x = 5,199,817.84/2,920.38
  6. Step 6: Final answer
    x = 1,780.53

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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.