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Finding the Fourth Proportional to 2,083, 3,125.31 and 784.57

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Solution

The fourth proportional to 2,083, 3,125.31 and 784.57 is: 1,177.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,083 : 3,125.31 = 784.57 : x
  2. Step 2: Convert to fraction form
    2,083/3,125.31 = 784.57/x
  3. Step 3: Cross multiply
    2,083x = 3,125.31 × 784.57
  4. Step 4: Simplify right side
    2,083x = 2,452,024.47
  5. Step 5: Solve for x
    x = 2,452,024.47/2,083
  6. Step 6: Final answer
    x = 1,177.16

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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.