Home / 9,639.29-13,302.31-5,660.47

Finding the Fourth Proportional to 9,639.29, 13,302.31 and 5,660.47

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Solution

The fourth proportional to 9,639.29, 13,302.31 and 5,660.47 is: 7,811.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,639.29 : 13,302.31 = 5,660.47 : x
  2. Step 2: Convert to fraction form
    9,639.29/13,302.31 = 5,660.47/x
  3. Step 3: Cross multiply
    9,639.29x = 13,302.31 × 5,660.47
  4. Step 4: Simplify right side
    9,639.29x = 75,297,326.69
  5. Step 5: Solve for x
    x = 75,297,326.69/9,639.29
  6. Step 6: Final answer
    x = 7,811.50

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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.