Home / 2,120.43-2,926.18-1,188.93

Finding the Fourth Proportional to 2,120.43, 2,926.18 and 1,188.93

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Solution

The fourth proportional to 2,120.43, 2,926.18 and 1,188.93 is: 1,640.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,120.43 : 2,926.18 = 1,188.93 : x
  2. Step 2: Convert to fraction form
    2,120.43/2,926.18 = 1,188.93/x
  3. Step 3: Cross multiply
    2,120.43x = 2,926.18 × 1,188.93
  4. Step 4: Simplify right side
    2,120.43x = 3,479,023.19
  5. Step 5: Solve for x
    x = 3,479,023.19/2,120.43
  6. Step 6: Final answer
    x = 1,640.72

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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.