Home / 2,640.31-3,643.65-1,461.40

Finding the Fourth Proportional to 2,640.31, 3,643.65 and 1,461.40

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Solution

The fourth proportional to 2,640.31, 3,643.65 and 1,461.40 is: 2,016.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,640.31 : 3,643.65 = 1,461.40 : x
  2. Step 2: Convert to fraction form
    2,640.31/3,643.65 = 1,461.40/x
  3. Step 3: Cross multiply
    2,640.31x = 3,643.65 × 1,461.40
  4. Step 4: Simplify right side
    2,640.31x = 5,324,830.11
  5. Step 5: Solve for x
    x = 5,324,830.11/2,640.31
  6. Step 6: Final answer
    x = 2,016.74

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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.