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Finding the Fourth Proportional to 1,809.17, 2,714.70 and 943.55

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Solution

The fourth proportional to 1,809.17, 2,714.70 and 943.55 is: 1,415.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,809.17 : 2,714.70 = 943.55 : x
  2. Step 2: Convert to fraction form
    1,809.17/2,714.70 = 943.55/x
  3. Step 3: Cross multiply
    1,809.17x = 2,714.70 × 943.55
  4. Step 4: Simplify right side
    1,809.17x = 2,561,455.19
  5. Step 5: Solve for x
    x = 2,561,455.19/1,809.17
  6. Step 6: Final answer
    x = 1,415.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.