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Finding the Fourth Proportional to 1,938.55, 2,905.43 and 897.14

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Solution

The fourth proportional to 1,938.55, 2,905.43 and 897.14 is: 1,344.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938.55 : 2,905.43 = 897.14 : x
  2. Step 2: Convert to fraction form
    1,938.55/2,905.43 = 897.14/x
  3. Step 3: Cross multiply
    1,938.55x = 2,905.43 × 897.14
  4. Step 4: Simplify right side
    1,938.55x = 2,606,577.47
  5. Step 5: Solve for x
    x = 2,606,577.47/1,938.55
  6. Step 6: Final answer
    x = 1,344.60

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1.5x scale

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.