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Finding the Fourth Proportional to 6,079.73, 9,120.81 and 1,920.13

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Solution

The fourth proportional to 6,079.73, 9,120.81 and 1,920.13 is: 2,880.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,079.73 : 9,120.81 = 1,920.13 : x
  2. Step 2: Convert to fraction form
    6,079.73/9,120.81 = 1,920.13/x
  3. Step 3: Cross multiply
    6,079.73x = 9,120.81 × 1,920.13
  4. Step 4: Simplify right side
    6,079.73x = 17,513,095.30
  5. Step 5: Solve for x
    x = 17,513,095.30/6,079.73
  6. Step 6: Final answer
    x = 2,880.57

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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.