Home / 2,688.10-4,031.67-1,226.89

Finding the Fourth Proportional to 2,688.10, 4,031.67 and 1,226.89

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Solution

The fourth proportional to 2,688.10, 4,031.67 and 1,226.89 is: 1,840.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.10 : 4,031.67 = 1,226.89 : x
  2. Step 2: Convert to fraction form
    2,688.10/4,031.67 = 1,226.89/x
  3. Step 3: Cross multiply
    2,688.10x = 4,031.67 × 1,226.89
  4. Step 4: Simplify right side
    2,688.10x = 4,946,415.61
  5. Step 5: Solve for x
    x = 4,946,415.61/2,688.10
  6. Step 6: Final answer
    x = 1,840.12

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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.