Home / 7,119.04-9,823.68-3,975.40

Finding the Fourth Proportional to 7,119.04, 9,823.68 and 3,975.40

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Solution

The fourth proportional to 7,119.04, 9,823.68 and 3,975.40 is: 5,485.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,119.04 : 9,823.68 = 3,975.40 : x
  2. Step 2: Convert to fraction form
    7,119.04/9,823.68 = 3,975.40/x
  3. Step 3: Cross multiply
    7,119.04x = 9,823.68 × 3,975.40
  4. Step 4: Simplify right side
    7,119.04x = 39,053,057.47
  5. Step 5: Solve for x
    x = 39,053,057.47/7,119.04
  6. Step 6: Final answer
    x = 5,485.72

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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.