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Finding the Fourth Proportional to 2,069, 3,119.02 and 1,931.52

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Solution

The fourth proportional to 2,069, 3,119.02 and 1,931.52 is: 2,911.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,069 : 3,119.02 = 1,931.52 : x
  2. Step 2: Convert to fraction form
    2,069/3,119.02 = 1,931.52/x
  3. Step 3: Cross multiply
    2,069x = 3,119.02 × 1,931.52
  4. Step 4: Simplify right side
    2,069x = 6,024,449.51
  5. Step 5: Solve for x
    x = 6,024,449.51/2,069
  6. Step 6: Final answer
    x = 2,911.77

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.