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Finding the Fourth Proportional to 1,328.82, 1,833.06 and 886.15

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Solution

The fourth proportional to 1,328.82, 1,833.06 and 886.15 is: 1,222.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.82 : 1,833.06 = 886.15 : x
  2. Step 2: Convert to fraction form
    1,328.82/1,833.06 = 886.15/x
  3. Step 3: Cross multiply
    1,328.82x = 1,833.06 × 886.15
  4. Step 4: Simplify right side
    1,328.82x = 1,624,366.12
  5. Step 5: Solve for x
    x = 1,624,366.12/1,328.82
  6. Step 6: Final answer
    x = 1,222.41

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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.