Home / 1,640.18-2,458.32-761.50

Finding the Fourth Proportional to 1,640.18, 2,458.32 and 761.50

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Solution

The fourth proportional to 1,640.18, 2,458.32 and 761.50 is: 1,141.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,640.18 : 2,458.32 = 761.50 : x
  2. Step 2: Convert to fraction form
    1,640.18/2,458.32 = 761.50/x
  3. Step 3: Cross multiply
    1,640.18x = 2,458.32 × 761.50
  4. Step 4: Simplify right side
    1,640.18x = 1,872,010.90
  5. Step 5: Solve for x
    x = 1,872,010.90/1,640.18
  6. Step 6: Final answer
    x = 1,141.34

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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.