Home / 2,374.80-3,278.04-1,431.12

Finding the Fourth Proportional to 2,374.80, 3,278.04 and 1,431.12

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Solution

The fourth proportional to 2,374.80, 3,278.04 and 1,431.12 is: 1,975.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,374.80 : 3,278.04 = 1,431.12 : x
  2. Step 2: Convert to fraction form
    2,374.80/3,278.04 = 1,431.12/x
  3. Step 3: Cross multiply
    2,374.80x = 3,278.04 × 1,431.12
  4. Step 4: Simplify right side
    2,374.80x = 4,691,268.60
  5. Step 5: Solve for x
    x = 4,691,268.60/2,374.80
  6. Step 6: Final answer
    x = 1,975.44

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1.5x scale

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.