Home / 3,427.80-5,140.65-1,783.45

Finding the Fourth Proportional to 3,427.80, 5,140.65 and 1,783.45

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Solution

The fourth proportional to 3,427.80, 5,140.65 and 1,783.45 is: 2,674.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,427.80 : 5,140.65 = 1,783.45 : x
  2. Step 2: Convert to fraction form
    3,427.80/5,140.65 = 1,783.45/x
  3. Step 3: Cross multiply
    3,427.80x = 5,140.65 × 1,783.45
  4. Step 4: Simplify right side
    3,427.80x = 9,168,092.24
  5. Step 5: Solve for x
    x = 9,168,092.24/3,427.80
  6. Step 6: Final answer
    x = 2,674.63

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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.