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Finding the Fourth Proportional to 1,842.78, 2,750.64 and 1,626.51

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Solution

The fourth proportional to 1,842.78, 2,750.64 and 1,626.51 is: 2,427.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,842.78 : 2,750.64 = 1,626.51 : x
  2. Step 2: Convert to fraction form
    1,842.78/2,750.64 = 1,626.51/x
  3. Step 3: Cross multiply
    1,842.78x = 2,750.64 × 1,626.51
  4. Step 4: Simplify right side
    1,842.78x = 4,473,943.47
  5. Step 5: Solve for x
    x = 4,473,943.47/1,842.78
  6. Step 6: Final answer
    x = 2,427.82

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.