Home / 7,119.36-9,824.40-3,975.30

Finding the Fourth Proportional to 7,119.36, 9,824.40 and 3,975.30

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Solution

The fourth proportional to 7,119.36, 9,824.40 and 3,975.30 is: 5,485.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.36 : 9,824.40 = 3,975.30 : x
  2. Step 2: Convert to fraction form
    7,119.36/9,824.40 = 3,975.30/x
  3. Step 3: Cross multiply
    7,119.36x = 9,824.40 × 3,975.30
  4. Step 4: Simplify right side
    7,119.36x = 39,054,937.32
  5. Step 5: Solve for x
    x = 39,054,937.32/7,119.36
  6. Step 6: Final answer
    x = 5,485.74

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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.