Home / 2,788.66-3,848.84-2,124.28

Finding the Fourth Proportional to 2,788.66, 3,848.84 and 2,124.28

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Solution

The fourth proportional to 2,788.66, 3,848.84 and 2,124.28 is: 2,931.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,788.66 : 3,848.84 = 2,124.28 : x
  2. Step 2: Convert to fraction form
    2,788.66/3,848.84 = 2,124.28/x
  3. Step 3: Cross multiply
    2,788.66x = 3,848.84 × 2,124.28
  4. Step 4: Simplify right side
    2,788.66x = 8,176,013.84
  5. Step 5: Solve for x
    x = 8,176,013.84/2,788.66
  6. Step 6: Final answer
    x = 2,931.88

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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.