Home / 2,912.93-4,023.68-2,158.24

Finding the Fourth Proportional to 2,912.93, 4,023.68 and 2,158.24

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Solution

The fourth proportional to 2,912.93, 4,023.68 and 2,158.24 is: 2,981.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.93 : 4,023.68 = 2,158.24 : x
  2. Step 2: Convert to fraction form
    2,912.93/4,023.68 = 2,158.24/x
  3. Step 3: Cross multiply
    2,912.93x = 4,023.68 × 2,158.24
  4. Step 4: Simplify right side
    2,912.93x = 8,684,062.46
  5. Step 5: Solve for x
    x = 8,684,062.46/2,912.93
  6. Step 6: Final answer
    x = 2,981.22

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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.