Home / 9,882.05-13,637.42-5,405.78

Finding the Fourth Proportional to 9,882.05, 13,637.42 and 5,405.78

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Solution

The fourth proportional to 9,882.05, 13,637.42 and 5,405.78 is: 7,460.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,882.05 : 13,637.42 = 5,405.78 : x
  2. Step 2: Convert to fraction form
    9,882.05/13,637.42 = 5,405.78/x
  3. Step 3: Cross multiply
    9,882.05x = 13,637.42 × 5,405.78
  4. Step 4: Simplify right side
    9,882.05x = 73,720,797.07
  5. Step 5: Solve for x
    x = 73,720,797.07/9,882.05
  6. Step 6: Final answer
    x = 7,460.08

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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.