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Finding the Fourth Proportional to 2,709.65, 3,739.29 and 1,590.39

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Solution

The fourth proportional to 2,709.65, 3,739.29 and 1,590.39 is: 2,194.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,709.65 : 3,739.29 = 1,590.39 : x
  2. Step 2: Convert to fraction form
    2,709.65/3,739.29 = 1,590.39/x
  3. Step 3: Cross multiply
    2,709.65x = 3,739.29 × 1,590.39
  4. Step 4: Simplify right side
    2,709.65x = 5,946,929.42
  5. Step 5: Solve for x
    x = 5,946,929.42/2,709.65
  6. Step 6: Final answer
    x = 2,194.72

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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.