Home / 9,882.96-13,638.47-5,406.69

Finding the Fourth Proportional to 9,882.96, 13,638.47 and 5,406.69

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Solution

The fourth proportional to 9,882.96, 13,638.47 and 5,406.69 is: 7,461.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,882.96 : 13,638.47 = 5,406.69 : x
  2. Step 2: Convert to fraction form
    9,882.96/13,638.47 = 5,406.69/x
  3. Step 3: Cross multiply
    9,882.96x = 13,638.47 × 5,406.69
  4. Step 4: Simplify right side
    9,882.96x = 73,738,979.36
  5. Step 5: Solve for x
    x = 73,738,979.36/9,882.96
  6. Step 6: Final answer
    x = 7,461.22

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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.