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Finding the Fourth Proportional to 2,460.45, 3,690.48 and 979.62

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Solution

The fourth proportional to 2,460.45, 3,690.48 and 979.62 is: 1,469.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,460.45 : 3,690.48 = 979.62 : x
  2. Step 2: Convert to fraction form
    2,460.45/3,690.48 = 979.62/x
  3. Step 3: Cross multiply
    2,460.45x = 3,690.48 × 979.62
  4. Step 4: Simplify right side
    2,460.45x = 3,615,268.02
  5. Step 5: Solve for x
    x = 3,615,268.02/2,460.45
  6. Step 6: Final answer
    x = 1,469.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.