Home / 8,745.28-13,117.72-2,171.36

Finding the Fourth Proportional to 8,745.28, 13,117.72 and 2,171.36

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Solution

The fourth proportional to 8,745.28, 13,117.72 and 2,171.36 is: 3,256.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,745.28 : 13,117.72 = 2,171.36 : x
  2. Step 2: Convert to fraction form
    8,745.28/13,117.72 = 2,171.36/x
  3. Step 3: Cross multiply
    8,745.28x = 13,117.72 × 2,171.36
  4. Step 4: Simplify right side
    8,745.28x = 28,483,292.50
  5. Step 5: Solve for x
    x = 28,483,292.50/8,745.28
  6. Step 6: Final answer
    x = 3,256.99

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1.5x scale

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.