Home / 1,740.42-2,402.91-1,215.54

Finding the Fourth Proportional to 1,740.42, 2,402.91 and 1,215.54

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Solution

The fourth proportional to 1,740.42, 2,402.91 and 1,215.54 is: 1,678.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.42 : 2,402.91 = 1,215.54 : x
  2. Step 2: Convert to fraction form
    1,740.42/2,402.91 = 1,215.54/x
  3. Step 3: Cross multiply
    1,740.42x = 2,402.91 × 1,215.54
  4. Step 4: Simplify right side
    1,740.42x = 2,920,833.22
  5. Step 5: Solve for x
    x = 2,920,833.22/1,740.42
  6. Step 6: Final answer
    x = 1,678.23

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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.