Home / 2,310.86-3,188.77-1,316.12

Finding the Fourth Proportional to 2,310.86, 3,188.77 and 1,316.12

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Solution

The fourth proportional to 2,310.86, 3,188.77 and 1,316.12 is: 1,816.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.86 : 3,188.77 = 1,316.12 : x
  2. Step 2: Convert to fraction form
    2,310.86/3,188.77 = 1,316.12/x
  3. Step 3: Cross multiply
    2,310.86x = 3,188.77 × 1,316.12
  4. Step 4: Simplify right side
    2,310.86x = 4,196,784.74
  5. Step 5: Solve for x
    x = 4,196,784.74/2,310.86
  6. Step 6: Final answer
    x = 1,816.11

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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.