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Finding the Fourth Proportional to 1,681.56, 2,526.12 and 1,025.19

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Solution

The fourth proportional to 1,681.56, 2,526.12 and 1,025.19 is: 1,540.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.56 : 2,526.12 = 1,025.19 : x
  2. Step 2: Convert to fraction form
    1,681.56/2,526.12 = 1,025.19/x
  3. Step 3: Cross multiply
    1,681.56x = 2,526.12 × 1,025.19
  4. Step 4: Simplify right side
    1,681.56x = 2,589,752.96
  5. Step 5: Solve for x
    x = 2,589,752.96/1,681.56
  6. Step 6: Final answer
    x = 1,540.09

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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.