Home / 7,989.13-11,979.47-4,243.01

Finding the Fourth Proportional to 7,989.13, 11,979.47 and 4,243.01

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Solution

The fourth proportional to 7,989.13, 11,979.47 and 4,243.01 is: 6,362.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.13 : 11,979.47 = 4,243.01 : x
  2. Step 2: Convert to fraction form
    7,989.13/11,979.47 = 4,243.01/x
  3. Step 3: Cross multiply
    7,989.13x = 11,979.47 × 4,243.01
  4. Step 4: Simplify right side
    7,989.13x = 50,828,951.11
  5. Step 5: Solve for x
    x = 50,828,951.11/7,989.13
  6. Step 6: Final answer
    x = 6,362.27

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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.