Home / 1,330.89-1,836.14-1,328.84

Finding the Fourth Proportional to 1,330.89, 1,836.14 and 1,328.84

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Solution

The fourth proportional to 1,330.89, 1,836.14 and 1,328.84 is: 1,833.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,330.89 : 1,836.14 = 1,328.84 : x
  2. Step 2: Convert to fraction form
    1,330.89/1,836.14 = 1,328.84/x
  3. Step 3: Cross multiply
    1,330.89x = 1,836.14 × 1,328.84
  4. Step 4: Simplify right side
    1,330.89x = 2,439,936.28
  5. Step 5: Solve for x
    x = 2,439,936.28/1,330.89
  6. Step 6: Final answer
    x = 1,833.31

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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.