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Finding the Fourth Proportional to 2,690.47, 3,714.11 and 1,795.70

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Solution

The fourth proportional to 2,690.47, 3,714.11 and 1,795.70 is: 2,478.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.47 : 3,714.11 = 1,795.70 : x
  2. Step 2: Convert to fraction form
    2,690.47/3,714.11 = 1,795.70/x
  3. Step 3: Cross multiply
    2,690.47x = 3,714.11 × 1,795.70
  4. Step 4: Simplify right side
    2,690.47x = 6,669,418.35
  5. Step 5: Solve for x
    x = 6,669,418.35/2,690.47
  6. Step 6: Final answer
    x = 2,478.91

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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.