Home / 2,192.31-3,285.36-1,931.76

Finding the Fourth Proportional to 2,192.31, 3,285.36 and 1,931.76

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Solution

The fourth proportional to 2,192.31, 3,285.36 and 1,931.76 is: 2,894.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,192.31 : 3,285.36 = 1,931.76 : x
  2. Step 2: Convert to fraction form
    2,192.31/3,285.36 = 1,931.76/x
  3. Step 3: Cross multiply
    2,192.31x = 3,285.36 × 1,931.76
  4. Step 4: Simplify right side
    2,192.31x = 6,346,527.03
  5. Step 5: Solve for x
    x = 6,346,527.03/2,192.31
  6. Step 6: Final answer
    x = 2,894.90

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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.