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Finding the Fourth Proportional to 2,730.07, 4,095.11 and 678.07

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Solution

The fourth proportional to 2,730.07, 4,095.11 and 678.07 is: 1,017.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,730.07 : 4,095.11 = 678.07 : x
  2. Step 2: Convert to fraction form
    2,730.07/4,095.11 = 678.07/x
  3. Step 3: Cross multiply
    2,730.07x = 4,095.11 × 678.07
  4. Step 4: Simplify right side
    2,730.07x = 2,776,771.24
  5. Step 5: Solve for x
    x = 2,776,771.24/2,730.07
  6. Step 6: Final answer
    x = 1,017.11

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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.