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Finding the Fourth Proportional to 1,294.85, 1,785.54 and 852.19

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Solution

The fourth proportional to 1,294.85, 1,785.54 and 852.19 is: 1,175.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294.85 : 1,785.54 = 852.19 : x
  2. Step 2: Convert to fraction form
    1,294.85/1,785.54 = 852.19/x
  3. Step 3: Cross multiply
    1,294.85x = 1,785.54 × 852.19
  4. Step 4: Simplify right side
    1,294.85x = 1,521,618.06
  5. Step 5: Solve for x
    x = 1,521,618.06/1,294.85
  6. Step 6: Final answer
    x = 1,175.13

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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.