Home / 2,415.52-3,331.83-1,890.64

Finding the Fourth Proportional to 2,415.52, 3,331.83 and 1,890.64

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Solution

The fourth proportional to 2,415.52, 3,331.83 and 1,890.64 is: 2,607.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,415.52 : 3,331.83 = 1,890.64 : x
  2. Step 2: Convert to fraction form
    2,415.52/3,331.83 = 1,890.64/x
  3. Step 3: Cross multiply
    2,415.52x = 3,331.83 × 1,890.64
  4. Step 4: Simplify right side
    2,415.52x = 6,299,291.07
  5. Step 5: Solve for x
    x = 6,299,291.07/2,415.52
  6. Step 6: Final answer
    x = 2,607.84

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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.