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Finding the Fourth Proportional to 2,006.80, 3,009.10 and 619.76

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Solution

The fourth proportional to 2,006.80, 3,009.10 and 619.76 is: 929.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,006.80 : 3,009.10 = 619.76 : x
  2. Step 2: Convert to fraction form
    2,006.80/3,009.10 = 619.76/x
  3. Step 3: Cross multiply
    2,006.80x = 3,009.10 × 619.76
  4. Step 4: Simplify right side
    2,006.80x = 1,864,904.77
  5. Step 5: Solve for x
    x = 1,864,904.77/2,006.80
  6. Step 6: Final answer
    x = 929.29

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1.5x scale

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.