Home / 2,419.64-3,632.82-1,985.48

Finding the Fourth Proportional to 2,419.64, 3,632.82 and 1,985.48

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Solution

The fourth proportional to 2,419.64, 3,632.82 and 1,985.48 is: 2,980.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,419.64 : 3,632.82 = 1,985.48 : x
  2. Step 2: Convert to fraction form
    2,419.64/3,632.82 = 1,985.48/x
  3. Step 3: Cross multiply
    2,419.64x = 3,632.82 × 1,985.48
  4. Step 4: Simplify right side
    2,419.64x = 7,212,891.45
  5. Step 5: Solve for x
    x = 7,212,891.45/2,419.64
  6. Step 6: Final answer
    x = 2,980.98

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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.