Home / 1,213.60-1,810.36-1,090.48

Finding the Fourth Proportional to 1,213.60, 1,810.36 and 1,090.48

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Solution

The fourth proportional to 1,213.60, 1,810.36 and 1,090.48 is: 1,626.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,213.60 : 1,810.36 = 1,090.48 : x
  2. Step 2: Convert to fraction form
    1,213.60/1,810.36 = 1,090.48/x
  3. Step 3: Cross multiply
    1,213.60x = 1,810.36 × 1,090.48
  4. Step 4: Simplify right side
    1,213.60x = 1,974,161.37
  5. Step 5: Solve for x
    x = 1,974,161.37/1,213.60
  6. Step 6: Final answer
    x = 1,626.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.