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Finding the Fourth Proportional to 2,690.70, 3,714.89 and 1,795.71

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Solution

The fourth proportional to 2,690.70, 3,714.89 and 1,795.71 is: 2,479.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,690.70 : 3,714.89 = 1,795.71 : x
  2. Step 2: Convert to fraction form
    2,690.70/3,714.89 = 1,795.71/x
  3. Step 3: Cross multiply
    2,690.70x = 3,714.89 × 1,795.71
  4. Step 4: Simplify right side
    2,690.70x = 6,670,870.07
  5. Step 5: Solve for x
    x = 6,670,870.07/2,690.70
  6. Step 6: Final answer
    x = 2,479.24

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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.