Home / 2,748.64-4,123.68-1,210.72

Finding the Fourth Proportional to 2,748.64, 4,123.68 and 1,210.72

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Solution

The fourth proportional to 2,748.64, 4,123.68 and 1,210.72 is: 1,816.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,748.64 : 4,123.68 = 1,210.72 : x
  2. Step 2: Convert to fraction form
    2,748.64/4,123.68 = 1,210.72/x
  3. Step 3: Cross multiply
    2,748.64x = 4,123.68 × 1,210.72
  4. Step 4: Simplify right side
    2,748.64x = 4,992,621.85
  5. Step 5: Solve for x
    x = 4,992,621.85/2,748.64
  6. Step 6: Final answer
    x = 1,816.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.