Home / 3,440-4,742.77-2,809.86

Finding the Fourth Proportional to 3,440, 4,742.77 and 2,809.86

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Solution

The fourth proportional to 3,440, 4,742.77 and 2,809.86 is: 3,873.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,440 : 4,742.77 = 2,809.86 : x
  2. Step 2: Convert to fraction form
    3,440/4,742.77 = 2,809.86/x
  3. Step 3: Cross multiply
    3,440x = 4,742.77 × 2,809.86
  4. Step 4: Simplify right side
    3,440x = 13,326,519.71
  5. Step 5: Solve for x
    x = 13,326,519.71/3,440
  6. Step 6: Final answer
    x = 3,873.99

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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.