Home / 4,288.75-6,431.00-1,515.00

Finding the Fourth Proportional to 4,288.75, 6,431.00 and 1,515.00

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Solution

The fourth proportional to 4,288.75, 6,431.00 and 1,515.00 is: 2,271.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,288.75 : 6,431.00 = 1,515.00 : x
  2. Step 2: Convert to fraction form
    4,288.75/6,431.00 = 1,515.00/x
  3. Step 3: Cross multiply
    4,288.75x = 6,431.00 × 1,515.00
  4. Step 4: Simplify right side
    4,288.75x = 9,742,981.54
  5. Step 5: Solve for x
    x = 9,742,981.54/4,288.75
  6. Step 6: Final answer
    x = 2,271.75

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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.