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Finding the Fourth Proportional to 2,482.78, 3,426.02 and 1,420.33

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Solution

The fourth proportional to 2,482.78, 3,426.02 and 1,420.33 is: 1,959.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,482.78 : 3,426.02 = 1,420.33 : x
  2. Step 2: Convert to fraction form
    2,482.78/3,426.02 = 1,420.33/x
  3. Step 3: Cross multiply
    2,482.78x = 3,426.02 × 1,420.33
  4. Step 4: Simplify right side
    2,482.78x = 4,866,054.75
  5. Step 5: Solve for x
    x = 4,866,054.75/2,482.78
  6. Step 6: Final answer
    x = 1,959.93

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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.