Home / 2,688.63-4,033.19-1,045.31

Finding the Fourth Proportional to 2,688.63, 4,033.19 and 1,045.31

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Solution

The fourth proportional to 2,688.63, 4,033.19 and 1,045.31 is: 1,568.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,688.63 : 4,033.19 = 1,045.31 : x
  2. Step 2: Convert to fraction form
    2,688.63/4,033.19 = 1,045.31/x
  3. Step 3: Cross multiply
    2,688.63x = 4,033.19 × 1,045.31
  4. Step 4: Simplify right side
    2,688.63x = 4,215,908.45
  5. Step 5: Solve for x
    x = 4,215,908.45/2,688.63
  6. Step 6: Final answer
    x = 1,568.05

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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.