Home / 1,883.40-2,599.65-1,220.30

Finding the Fourth Proportional to 1,883.40, 2,599.65 and 1,220.30

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Solution

The fourth proportional to 1,883.40, 2,599.65 and 1,220.30 is: 1,684.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,883.40 : 2,599.65 = 1,220.30 : x
  2. Step 2: Convert to fraction form
    1,883.40/2,599.65 = 1,220.30/x
  3. Step 3: Cross multiply
    1,883.40x = 2,599.65 × 1,220.30
  4. Step 4: Simplify right side
    1,883.40x = 3,172,339.90
  5. Step 5: Solve for x
    x = 3,172,339.90/1,883.40
  6. Step 6: Final answer
    x = 1,684.37

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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.