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Finding the Fourth Proportional to 2,154.66, 2,974.05 and 1,270.98

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Solution

The fourth proportional to 2,154.66, 2,974.05 and 1,270.98 is: 1,754.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,154.66 : 2,974.05 = 1,270.98 : x
  2. Step 2: Convert to fraction form
    2,154.66/2,974.05 = 1,270.98/x
  3. Step 3: Cross multiply
    2,154.66x = 2,974.05 × 1,270.98
  4. Step 4: Simplify right side
    2,154.66x = 3,779,958.07
  5. Step 5: Solve for x
    x = 3,779,958.07/2,154.66
  6. Step 6: Final answer
    x = 1,754.32

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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.