Home / 2,143.16-3,192.34-2,117.60

Finding the Fourth Proportional to 2,143.16, 3,192.34 and 2,117.60

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Solution

The fourth proportional to 2,143.16, 3,192.34 and 2,117.60 is: 3,154.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,143.16 : 3,192.34 = 2,117.60 : x
  2. Step 2: Convert to fraction form
    2,143.16/3,192.34 = 2,117.60/x
  3. Step 3: Cross multiply
    2,143.16x = 3,192.34 × 2,117.60
  4. Step 4: Simplify right side
    2,143.16x = 6,760,099.18
  5. Step 5: Solve for x
    x = 6,760,099.18/2,143.16
  6. Step 6: Final answer
    x = 3,154.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.