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Finding the Fourth Proportional to 1,360.51, 2,041.67 and 873.91

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Solution

The fourth proportional to 1,360.51, 2,041.67 and 873.91 is: 1,311.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,360.51 : 2,041.67 = 873.91 : x
  2. Step 2: Convert to fraction form
    1,360.51/2,041.67 = 873.91/x
  3. Step 3: Cross multiply
    1,360.51x = 2,041.67 × 873.91
  4. Step 4: Simplify right side
    1,360.51x = 1,784,221.25
  5. Step 5: Solve for x
    x = 1,784,221.25/1,360.51
  6. Step 6: Final answer
    x = 1,311.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.