Home / 4,279.75-6,420.71-1,201.75

Finding the Fourth Proportional to 4,279.75, 6,420.71 and 1,201.75

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Solution

The fourth proportional to 4,279.75, 6,420.71 and 1,201.75 is: 1,802.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,279.75 : 6,420.71 = 1,201.75 : x
  2. Step 2: Convert to fraction form
    4,279.75/6,420.71 = 1,201.75/x
  3. Step 3: Cross multiply
    4,279.75x = 6,420.71 × 1,201.75
  4. Step 4: Simplify right side
    4,279.75x = 7,716,088.24
  5. Step 5: Solve for x
    x = 7,716,088.24/4,279.75
  6. Step 6: Final answer
    x = 1,802.93

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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.