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Finding the Fourth Proportional to 1,347.73, 1,860.36 and 1,207.60

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Solution

The fourth proportional to 1,347.73, 1,860.36 and 1,207.60 is: 1,666.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,347.73 : 1,860.36 = 1,207.60 : x
  2. Step 2: Convert to fraction form
    1,347.73/1,860.36 = 1,207.60/x
  3. Step 3: Cross multiply
    1,347.73x = 1,860.36 × 1,207.60
  4. Step 4: Simplify right side
    1,347.73x = 2,246,570.74
  5. Step 5: Solve for x
    x = 2,246,570.74/1,347.73
  6. Step 6: Final answer
    x = 1,666.93

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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.