Home / 2,688.76-4,029.65-1,206.89

Finding the Fourth Proportional to 2,688.76, 4,029.65 and 1,206.89

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Solution

The fourth proportional to 2,688.76, 4,029.65 and 1,206.89 is: 1,808.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.76 : 4,029.65 = 1,206.89 : x
  2. Step 2: Convert to fraction form
    2,688.76/4,029.65 = 1,206.89/x
  3. Step 3: Cross multiply
    2,688.76x = 4,029.65 × 1,206.89
  4. Step 4: Simplify right side
    2,688.76x = 4,863,344.29
  5. Step 5: Solve for x
    x = 4,863,344.29/2,688.76
  6. Step 6: Final answer
    x = 1,808.77

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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.