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Finding the Fourth Proportional to 1,670.73, 2,307.39 and 1,487.49

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Solution

The fourth proportional to 1,670.73, 2,307.39 and 1,487.49 is: 2,054.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,670.73 : 2,307.39 = 1,487.49 : x
  2. Step 2: Convert to fraction form
    1,670.73/2,307.39 = 1,487.49/x
  3. Step 3: Cross multiply
    1,670.73x = 2,307.39 × 1,487.49
  4. Step 4: Simplify right side
    1,670.73x = 3,432,219.55
  5. Step 5: Solve for x
    x = 3,432,219.55/1,670.73
  6. Step 6: Final answer
    x = 2,054.32

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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.