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Finding the Fourth Proportional to 1,681.56, 2,528.03 and 1,375.63

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Solution

The fourth proportional to 1,681.56, 2,528.03 and 1,375.63 is: 2,068.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,681.56 : 2,528.03 = 1,375.63 : x
  2. Step 2: Convert to fraction form
    1,681.56/2,528.03 = 1,375.63/x
  3. Step 3: Cross multiply
    1,681.56x = 2,528.03 × 1,375.63
  4. Step 4: Simplify right side
    1,681.56x = 3,477,631.03
  5. Step 5: Solve for x
    x = 3,477,631.03/1,681.56
  6. Step 6: Final answer
    x = 2,068.10

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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.