Home / 8,580.40-12,868.44-3,386.32

Finding the Fourth Proportional to 8,580.40, 12,868.44 and 3,386.32

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Solution

The fourth proportional to 8,580.40, 12,868.44 and 3,386.32 is: 5,078.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,580.40 : 12,868.44 = 3,386.32 : x
  2. Step 2: Convert to fraction form
    8,580.40/12,868.44 = 3,386.32/x
  3. Step 3: Cross multiply
    8,580.40x = 12,868.44 × 3,386.32
  4. Step 4: Simplify right side
    8,580.40x = 43,576,655.74
  5. Step 5: Solve for x
    x = 43,576,655.74/8,580.40
  6. Step 6: Final answer
    x = 5,078.63

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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.