Home / 3,120.21-4,681.78-1,364.99

Finding the Fourth Proportional to 3,120.21, 4,681.78 and 1,364.99

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Solution

The fourth proportional to 3,120.21, 4,681.78 and 1,364.99 is: 2,048.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,120.21 : 4,681.78 = 1,364.99 : x
  2. Step 2: Convert to fraction form
    3,120.21/4,681.78 = 1,364.99/x
  3. Step 3: Cross multiply
    3,120.21x = 4,681.78 × 1,364.99
  4. Step 4: Simplify right side
    3,120.21x = 6,390,552.65
  5. Step 5: Solve for x
    x = 6,390,552.65/3,120.21
  6. Step 6: Final answer
    x = 2,048.12

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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.