Home / 1,220.40-1,679.94-1,094.04

Finding the Fourth Proportional to 1,220.40, 1,679.94 and 1,094.04

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Solution

The fourth proportional to 1,220.40, 1,679.94 and 1,094.04 is: 1,506.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,220.40 : 1,679.94 = 1,094.04 : x
  2. Step 2: Convert to fraction form
    1,220.40/1,679.94 = 1,094.04/x
  3. Step 3: Cross multiply
    1,220.40x = 1,679.94 × 1,094.04
  4. Step 4: Simplify right side
    1,220.40x = 1,837,921.56
  5. Step 5: Solve for x
    x = 1,837,921.56/1,220.40
  6. Step 6: Final answer
    x = 1,506.00

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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.