Home / 2,020.64-2,788.56-1,312.64

Finding the Fourth Proportional to 2,020.64, 2,788.56 and 1,312.64

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Solution

The fourth proportional to 2,020.64, 2,788.56 and 1,312.64 is: 1,811.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,020.64 : 2,788.56 = 1,312.64 : x
  2. Step 2: Convert to fraction form
    2,020.64/2,788.56 = 1,312.64/x
  3. Step 3: Cross multiply
    2,020.64x = 2,788.56 × 1,312.64
  4. Step 4: Simplify right side
    2,020.64x = 3,660,375.40
  5. Step 5: Solve for x
    x = 3,660,375.40/2,020.64
  6. Step 6: Final answer
    x = 1,811.49

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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.