Home / 9,719.79-13,413.38-5,528.31

Finding the Fourth Proportional to 9,719.79, 13,413.38 and 5,528.31

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Solution

The fourth proportional to 9,719.79, 13,413.38 and 5,528.31 is: 7,629.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,719.79 : 13,413.38 = 5,528.31 : x
  2. Step 2: Convert to fraction form
    9,719.79/13,413.38 = 5,528.31/x
  3. Step 3: Cross multiply
    9,719.79x = 13,413.38 × 5,528.31
  4. Step 4: Simplify right side
    9,719.79x = 74,153,322.79
  5. Step 5: Solve for x
    x = 74,153,322.79/9,719.79
  6. Step 6: Final answer
    x = 7,629.11

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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.