Home / 7,719.36-10,643.76-5,413.92

Finding the Fourth Proportional to 7,719.36, 10,643.76 and 5,413.92

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Solution

The fourth proportional to 7,719.36, 10,643.76 and 5,413.92 is: 7,464.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,719.36 : 10,643.76 = 5,413.92 : x
  2. Step 2: Convert to fraction form
    7,719.36/10,643.76 = 5,413.92/x
  3. Step 3: Cross multiply
    7,719.36x = 10,643.76 × 5,413.92
  4. Step 4: Simplify right side
    7,719.36x = 57,624,465.14
  5. Step 5: Solve for x
    x = 57,624,465.14/7,719.36
  6. Step 6: Final answer
    x = 7,464.93

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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.