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Finding the Fourth Proportional to 7,127.51, 9,839.42 and 5,007.54

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Solution

The fourth proportional to 7,127.51, 9,839.42 and 5,007.54 is: 6,912.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,127.51 : 9,839.42 = 5,007.54 : x
  2. Step 2: Convert to fraction form
    7,127.51/9,839.42 = 5,007.54/x
  3. Step 3: Cross multiply
    7,127.51x = 9,839.42 × 5,007.54
  4. Step 4: Simplify right side
    7,127.51x = 49,271,264.19
  5. Step 5: Solve for x
    x = 49,271,264.19/7,127.51
  6. Step 6: Final answer
    x = 6,912.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.