Home / 1,816.30-2,717.70-1,330.30

Finding the Fourth Proportional to 1,816.30, 2,717.70 and 1,330.30

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Solution

The fourth proportional to 1,816.30, 2,717.70 and 1,330.30 is: 1,990.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,816.30 : 2,717.70 = 1,330.30 : x
  2. Step 2: Convert to fraction form
    1,816.30/2,717.70 = 1,330.30/x
  3. Step 3: Cross multiply
    1,816.30x = 2,717.70 × 1,330.30
  4. Step 4: Simplify right side
    1,816.30x = 3,615,356.31
  5. Step 5: Solve for x
    x = 3,615,356.31/1,816.30
  6. Step 6: Final answer
    x = 1,990.51

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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.