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Finding the Fourth Proportional to 7,048.89, 9,727.53 and 3,905.13

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Solution

The fourth proportional to 7,048.89, 9,727.53 and 3,905.13 is: 5,389.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,048.89 : 9,727.53 = 3,905.13 : x
  2. Step 2: Convert to fraction form
    7,048.89/9,727.53 = 3,905.13/x
  3. Step 3: Cross multiply
    7,048.89x = 9,727.53 × 3,905.13
  4. Step 4: Simplify right side
    7,048.89x = 37,987,269.23
  5. Step 5: Solve for x
    x = 37,987,269.23/7,048.89
  6. Step 6: Final answer
    x = 5,389.11

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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.