Home / 9,639.86-13,303.11-5,661.02

Finding the Fourth Proportional to 9,639.86, 13,303.11 and 5,661.02

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Solution

The fourth proportional to 9,639.86, 13,303.11 and 5,661.02 is: 7,812.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.86 : 13,303.11 = 5,661.02 : x
  2. Step 2: Convert to fraction form
    9,639.86/13,303.11 = 5,661.02/x
  3. Step 3: Cross multiply
    9,639.86x = 13,303.11 × 5,661.02
  4. Step 4: Simplify right side
    9,639.86x = 75,309,171.77
  5. Step 5: Solve for x
    x = 75,309,171.77/9,639.86
  6. Step 6: Final answer
    x = 7,812.27

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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.