Home / 2,220.09-3,063.67-1,225.37

Finding the Fourth Proportional to 2,220.09, 3,063.67 and 1,225.37

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Solution

The fourth proportional to 2,220.09, 3,063.67 and 1,225.37 is: 1,690.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,220.09 : 3,063.67 = 1,225.37 : x
  2. Step 2: Convert to fraction form
    2,220.09/3,063.67 = 1,225.37/x
  3. Step 3: Cross multiply
    2,220.09x = 3,063.67 × 1,225.37
  4. Step 4: Simplify right side
    2,220.09x = 3,754,129.31
  5. Step 5: Solve for x
    x = 3,754,129.31/2,220.09
  6. Step 6: Final answer
    x = 1,690.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.