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Finding the Fourth Proportional to 1,328.96, 1,834.14 and 957.16

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Solution

The fourth proportional to 1,328.96, 1,834.14 and 957.16 is: 1,321.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,328.96 : 1,834.14 = 957.16 : x
  2. Step 2: Convert to fraction form
    1,328.96/1,834.14 = 957.16/x
  3. Step 3: Cross multiply
    1,328.96x = 1,834.14 × 957.16
  4. Step 4: Simplify right side
    1,328.96x = 1,755,565.44
  5. Step 5: Solve for x
    x = 1,755,565.44/1,328.96
  6. Step 6: Final answer
    x = 1,321.01

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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.