Home / 8,130.85-11,218.70-4,544.78

Finding the Fourth Proportional to 8,130.85, 11,218.70 and 4,544.78

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Solution

The fourth proportional to 8,130.85, 11,218.70 and 4,544.78 is: 6,270.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,130.85 : 11,218.70 = 4,544.78 : x
  2. Step 2: Convert to fraction form
    8,130.85/11,218.70 = 4,544.78/x
  3. Step 3: Cross multiply
    8,130.85x = 11,218.70 × 4,544.78
  4. Step 4: Simplify right side
    8,130.85x = 50,986,478.65
  5. Step 5: Solve for x
    x = 50,986,478.65/8,130.85
  6. Step 6: Final answer
    x = 6,270.75

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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.