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Finding the Fourth Proportional to 1,813.26, 2,502.34 and 985.26

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Solution

The fourth proportional to 1,813.26, 2,502.34 and 985.26 is: 1,359.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.26 : 2,502.34 = 985.26 : x
  2. Step 2: Convert to fraction form
    1,813.26/2,502.34 = 985.26/x
  3. Step 3: Cross multiply
    1,813.26x = 2,502.34 × 985.26
  4. Step 4: Simplify right side
    1,813.26x = 2,465,455.51
  5. Step 5: Solve for x
    x = 2,465,455.51/1,813.26
  6. Step 6: Final answer
    x = 1,359.68

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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.