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Finding the Fourth Proportional to 1,765, 2,427.06 and 1,531.72

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Solution

The fourth proportional to 1,765, 2,427.06 and 1,531.72 is: 2,106.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,765 : 2,427.06 = 1,531.72 : x
  2. Step 2: Convert to fraction form
    1,765/2,427.06 = 1,531.72/x
  3. Step 3: Cross multiply
    1,765x = 2,427.06 × 1,531.72
  4. Step 4: Simplify right side
    1,765x = 3,717,576.34
  5. Step 5: Solve for x
    x = 3,717,576.34/1,765
  6. Step 6: Final answer
    x = 2,106.28

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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.