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Finding the Fourth Proportional to 1,646.30, 2,271.62 and 937.86

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Solution

The fourth proportional to 1,646.30, 2,271.62 and 937.86 is: 1,294.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,646.30 : 2,271.62 = 937.86 : x
  2. Step 2: Convert to fraction form
    1,646.30/2,271.62 = 937.86/x
  3. Step 3: Cross multiply
    1,646.30x = 2,271.62 × 937.86
  4. Step 4: Simplify right side
    1,646.30x = 2,130,461.53
  5. Step 5: Solve for x
    x = 2,130,461.53/1,646.30
  6. Step 6: Final answer
    x = 1,294.09

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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.