Home / 1,740.23-2,609.11-815.28

Finding the Fourth Proportional to 1,740.23, 2,609.11 and 815.28

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Solution

The fourth proportional to 1,740.23, 2,609.11 and 815.28 is: 1,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.23 : 2,609.11 = 815.28 : x
  2. Step 2: Convert to fraction form
    1,740.23/2,609.11 = 815.28/x
  3. Step 3: Cross multiply
    1,740.23x = 2,609.11 × 815.28
  4. Step 4: Simplify right side
    1,740.23x = 2,127,151.12
  5. Step 5: Solve for x
    x = 2,127,151.12/1,740.23
  6. Step 6: Final answer
    x = 1,222.34

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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.