Home / 8,686.44-13,033.59-3,420

Finding the Fourth Proportional to 8,686.44, 13,033.59 and 3,420

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Solution

The fourth proportional to 8,686.44, 13,033.59 and 3,420 is: 5,131.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,686.44 : 13,033.59 = 3,420 : x
  2. Step 2: Convert to fraction form
    8,686.44/13,033.59 = 3,420/x
  3. Step 3: Cross multiply
    8,686.44x = 13,033.59 × 3,420
  4. Step 4: Simplify right side
    8,686.44x = 44,574,877.80
  5. Step 5: Solve for x
    x = 44,574,877.80/8,686.44
  6. Step 6: Final answer
    x = 5,131.55

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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.