Home / 9,678.13-13,355.81-5,486.38

Finding the Fourth Proportional to 9,678.13, 13,355.81 and 5,486.38

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Solution

The fourth proportional to 9,678.13, 13,355.81 and 5,486.38 is: 7,571.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,678.13 : 13,355.81 = 5,486.38 : x
  2. Step 2: Convert to fraction form
    9,678.13/13,355.81 = 5,486.38/x
  3. Step 3: Cross multiply
    9,678.13x = 13,355.81 × 5,486.38
  4. Step 4: Simplify right side
    9,678.13x = 73,275,048.87
  5. Step 5: Solve for x
    x = 73,275,048.87/9,678.13
  6. Step 6: Final answer
    x = 7,571.20

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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.