Home / 2,162.64-2,983.28-1,277.76

Finding the Fourth Proportional to 2,162.64, 2,983.28 and 1,277.76

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Solution

The fourth proportional to 2,162.64, 2,983.28 and 1,277.76 is: 1,762.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,162.64 : 2,983.28 = 1,277.76 : x
  2. Step 2: Convert to fraction form
    2,162.64/2,983.28 = 1,277.76/x
  3. Step 3: Cross multiply
    2,162.64x = 2,983.28 × 1,277.76
  4. Step 4: Simplify right side
    2,162.64x = 3,811,915.85
  5. Step 5: Solve for x
    x = 3,811,915.85/2,162.64
  6. Step 6: Final answer
    x = 1,762.62

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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.