Home / 4,259.20-6,389.70-1,297.40

Finding the Fourth Proportional to 4,259.20, 6,389.70 and 1,297.40

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Solution

The fourth proportional to 4,259.20, 6,389.70 and 1,297.40 is: 1,946.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,259.20 : 6,389.70 = 1,297.40 : x
  2. Step 2: Convert to fraction form
    4,259.20/6,389.70 = 1,297.40/x
  3. Step 3: Cross multiply
    4,259.20x = 6,389.70 × 1,297.40
  4. Step 4: Simplify right side
    4,259.20x = 8,289,996.78
  5. Step 5: Solve for x
    x = 8,289,996.78/4,259.20
  6. Step 6: Final answer
    x = 1,946.37

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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.