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Finding the Fourth Proportional to 1,813.25, 2,502.33 and 985.25

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Solution

The fourth proportional to 1,813.25, 2,502.33 and 985.25 is: 1,359.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,813.25 : 2,502.33 = 985.25 : x
  2. Step 2: Convert to fraction form
    1,813.25/2,502.33 = 985.25/x
  3. Step 3: Cross multiply
    1,813.25x = 2,502.33 × 985.25
  4. Step 4: Simplify right side
    1,813.25x = 2,465,420.63
  5. Step 5: Solve for x
    x = 2,465,420.63/1,813.25
  6. Step 6: Final answer
    x = 1,359.67

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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.