Home / 2,310.64-3,188.70-1,262.80

Finding the Fourth Proportional to 2,310.64, 3,188.70 and 1,262.80

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Solution

The fourth proportional to 2,310.64, 3,188.70 and 1,262.80 is: 1,742.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,310.64 : 3,188.70 = 1,262.80 : x
  2. Step 2: Convert to fraction form
    2,310.64/3,188.70 = 1,262.80/x
  3. Step 3: Cross multiply
    2,310.64x = 3,188.70 × 1,262.80
  4. Step 4: Simplify right side
    2,310.64x = 4,026,690.36
  5. Step 5: Solve for x
    x = 4,026,690.36/2,310.64
  6. Step 6: Final answer
    x = 1,742.67

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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.