Home / 1,894.57-2,615.81-1,186.72

Finding the Fourth Proportional to 1,894.57, 2,615.81 and 1,186.72

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Solution

The fourth proportional to 1,894.57, 2,615.81 and 1,186.72 is: 1,638.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,894.57 : 2,615.81 = 1,186.72 : x
  2. Step 2: Convert to fraction form
    1,894.57/2,615.81 = 1,186.72/x
  3. Step 3: Cross multiply
    1,894.57x = 2,615.81 × 1,186.72
  4. Step 4: Simplify right side
    1,894.57x = 3,104,215.03
  5. Step 5: Solve for x
    x = 3,104,215.03/1,894.57
  6. Step 6: Final answer
    x = 1,638.48

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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.