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Finding the Fourth Proportional to 1,873.67, 2,810.52 and 486.91

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Solution

The fourth proportional to 1,873.67, 2,810.52 and 486.91 is: 730.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,873.67 : 2,810.52 = 486.91 : x
  2. Step 2: Convert to fraction form
    1,873.67/2,810.52 = 486.91/x
  3. Step 3: Cross multiply
    1,873.67x = 2,810.52 × 486.91
  4. Step 4: Simplify right side
    1,873.67x = 1,368,470.29
  5. Step 5: Solve for x
    x = 1,368,470.29/1,873.67
  6. Step 6: Final answer
    x = 730.37

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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.