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Finding the Fourth Proportional to 1,740.69, 2,610.45 and 816.12

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Solution

The fourth proportional to 1,740.69, 2,610.45 and 816.12 is: 1,223.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.69 : 2,610.45 = 816.12 : x
  2. Step 2: Convert to fraction form
    1,740.69/2,610.45 = 816.12/x
  3. Step 3: Cross multiply
    1,740.69x = 2,610.45 × 816.12
  4. Step 4: Simplify right side
    1,740.69x = 2,130,440.45
  5. Step 5: Solve for x
    x = 2,130,440.45/1,740.69
  6. Step 6: Final answer
    x = 1,223.91

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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.