Home / 7,812.45-10,781.01-4,668.03

Finding the Fourth Proportional to 7,812.45, 10,781.01 and 4,668.03

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Solution

The fourth proportional to 7,812.45, 10,781.01 and 4,668.03 is: 6,441.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,812.45 : 10,781.01 = 4,668.03 : x
  2. Step 2: Convert to fraction form
    7,812.45/10,781.01 = 4,668.03/x
  3. Step 3: Cross multiply
    7,812.45x = 10,781.01 × 4,668.03
  4. Step 4: Simplify right side
    7,812.45x = 50,326,078.11
  5. Step 5: Solve for x
    x = 50,326,078.11/7,812.45
  6. Step 6: Final answer
    x = 6,441.78

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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.