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Finding the Fourth Proportional to 1,809.37, 2,496.92 and 981.37

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Solution

The fourth proportional to 1,809.37, 2,496.92 and 981.37 is: 1,354.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.37 : 2,496.92 = 981.37 : x
  2. Step 2: Convert to fraction form
    1,809.37/2,496.92 = 981.37/x
  3. Step 3: Cross multiply
    1,809.37x = 2,496.92 × 981.37
  4. Step 4: Simplify right side
    1,809.37x = 2,450,402.38
  5. Step 5: Solve for x
    x = 2,450,402.38/1,809.37
  6. Step 6: Final answer
    x = 1,354.28

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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.