Home / 1,740.13-2,402.59-1,215.25

Finding the Fourth Proportional to 1,740.13, 2,402.59 and 1,215.25

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Solution

The fourth proportional to 1,740.13, 2,402.59 and 1,215.25 is: 1,677.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,740.13 : 2,402.59 = 1,215.25 : x
  2. Step 2: Convert to fraction form
    1,740.13/2,402.59 = 1,215.25/x
  3. Step 3: Cross multiply
    1,740.13x = 2,402.59 × 1,215.25
  4. Step 4: Simplify right side
    1,740.13x = 2,919,747.50
  5. Step 5: Solve for x
    x = 2,919,747.50/1,740.13
  6. Step 6: Final answer
    x = 1,677.89

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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.