Home / 1,883.20-2,599.36-1,221.12

Finding the Fourth Proportional to 1,883.20, 2,599.36 and 1,221.12

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Solution

The fourth proportional to 1,883.20, 2,599.36 and 1,221.12 is: 1,685.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,883.20 : 2,599.36 = 1,221.12 : x
  2. Step 2: Convert to fraction form
    1,883.20/2,599.36 = 1,221.12/x
  3. Step 3: Cross multiply
    1,883.20x = 2,599.36 × 1,221.12
  4. Step 4: Simplify right side
    1,883.20x = 3,174,130.48
  5. Step 5: Solve for x
    x = 3,174,130.48/1,883.20
  6. Step 6: Final answer
    x = 1,685.50

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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.