Home / 3,970.42-5,479.65-2,711.07

Finding the Fourth Proportional to 3,970.42, 5,479.65 and 2,711.07

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Solution

The fourth proportional to 3,970.42, 5,479.65 and 2,711.07 is: 3,741.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,970.42 : 5,479.65 = 2,711.07 : x
  2. Step 2: Convert to fraction form
    3,970.42/5,479.65 = 2,711.07/x
  3. Step 3: Cross multiply
    3,970.42x = 5,479.65 × 2,711.07
  4. Step 4: Simplify right side
    3,970.42x = 14,855,714.73
  5. Step 5: Solve for x
    x = 14,855,714.73/3,970.42
  6. Step 6: Final answer
    x = 3,741.60

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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.