Home / 1,921.81-2,652.13-1,165.59

Finding the Fourth Proportional to 1,921.81, 2,652.13 and 1,165.59

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Solution

The fourth proportional to 1,921.81, 2,652.13 and 1,165.59 is: 1,608.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,921.81 : 2,652.13 = 1,165.59 : x
  2. Step 2: Convert to fraction form
    1,921.81/2,652.13 = 1,165.59/x
  3. Step 3: Cross multiply
    1,921.81x = 2,652.13 × 1,165.59
  4. Step 4: Simplify right side
    1,921.81x = 3,091,291.11
  5. Step 5: Solve for x
    x = 3,091,291.11/1,921.81
  6. Step 6: Final answer
    x = 1,608.53

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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.