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Finding the Fourth Proportional to 2,018.63, 3,028.28 and 631.76

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Solution

The fourth proportional to 2,018.63, 3,028.28 and 631.76 is: 947.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,018.63 : 3,028.28 = 631.76 : x
  2. Step 2: Convert to fraction form
    2,018.63/3,028.28 = 631.76/x
  3. Step 3: Cross multiply
    2,018.63x = 3,028.28 × 631.76
  4. Step 4: Simplify right side
    2,018.63x = 1,913,127.87
  5. Step 5: Solve for x
    x = 1,913,127.87/2,018.63
  6. Step 6: Final answer
    x = 947.74

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.