Home / 8,589.90-11,851.36-4,812.55

Finding the Fourth Proportional to 8,589.90, 11,851.36 and 4,812.55

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Solution

The fourth proportional to 8,589.90, 11,851.36 and 4,812.55 is: 6,639.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,589.90 : 11,851.36 = 4,812.55 : x
  2. Step 2: Convert to fraction form
    8,589.90/11,851.36 = 4,812.55/x
  3. Step 3: Cross multiply
    8,589.90x = 11,851.36 × 4,812.55
  4. Step 4: Simplify right side
    8,589.90x = 57,035,262.57
  5. Step 5: Solve for x
    x = 57,035,262.57/8,589.90
  6. Step 6: Final answer
    x = 6,639.81

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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.