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Finding the Fourth Proportional to 2,157.01, 2,975.73 and 1,370.63

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Solution

The fourth proportional to 2,157.01, 2,975.73 and 1,370.63 is: 1,890.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,157.01 : 2,975.73 = 1,370.63 : x
  2. Step 2: Convert to fraction form
    2,157.01/2,975.73 = 1,370.63/x
  3. Step 3: Cross multiply
    2,157.01x = 2,975.73 × 1,370.63
  4. Step 4: Simplify right side
    2,157.01x = 4,078,624.81
  5. Step 5: Solve for x
    x = 4,078,624.81/2,157.01
  6. Step 6: Final answer
    x = 1,890.87

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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.