Home / 4,242.14-6,360.90-1,280.18

Finding the Fourth Proportional to 4,242.14, 6,360.90 and 1,280.18

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Solution

The fourth proportional to 4,242.14, 6,360.90 and 1,280.18 is: 1,919.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,242.14 : 6,360.90 = 1,280.18 : x
  2. Step 2: Convert to fraction form
    4,242.14/6,360.90 = 1,280.18/x
  3. Step 3: Cross multiply
    4,242.14x = 6,360.90 × 1,280.18
  4. Step 4: Simplify right side
    4,242.14x = 8,143,065.16
  5. Step 5: Solve for x
    x = 8,143,065.16/4,242.14
  6. Step 6: Final answer
    x = 1,919.57

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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.