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Finding the Fourth Proportional to 1,885.53, 2,601.63 and 1,186.50

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Solution

The fourth proportional to 1,885.53, 2,601.63 and 1,186.50 is: 1,637.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,885.53 : 2,601.63 = 1,186.50 : x
  2. Step 2: Convert to fraction form
    1,885.53/2,601.63 = 1,186.50/x
  3. Step 3: Cross multiply
    1,885.53x = 2,601.63 × 1,186.50
  4. Step 4: Simplify right side
    1,885.53x = 3,086,834.00
  5. Step 5: Solve for x
    x = 3,086,834.00/1,885.53
  6. Step 6: Final answer
    x = 1,637.12

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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.