Home / 7,115.69-10,673.55-1,921.57

Finding the Fourth Proportional to 7,115.69, 10,673.55 and 1,921.57

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Solution

The fourth proportional to 7,115.69, 10,673.55 and 1,921.57 is: 2,882.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,115.69 : 10,673.55 = 1,921.57 : x
  2. Step 2: Convert to fraction form
    7,115.69/10,673.55 = 1,921.57/x
  3. Step 3: Cross multiply
    7,115.69x = 10,673.55 × 1,921.57
  4. Step 4: Simplify right side
    7,115.69x = 20,509,946.79
  5. Step 5: Solve for x
    x = 20,509,946.79/7,115.69
  6. Step 6: Final answer
    x = 2,882.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.