Home / 2,985.49-4,120.37-1,807.30

Finding the Fourth Proportional to 2,985.49, 4,120.37 and 1,807.30

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Solution

The fourth proportional to 2,985.49, 4,120.37 and 1,807.30 is: 2,494.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,985.49 : 4,120.37 = 1,807.30 : x
  2. Step 2: Convert to fraction form
    2,985.49/4,120.37 = 1,807.30/x
  3. Step 3: Cross multiply
    2,985.49x = 4,120.37 × 1,807.30
  4. Step 4: Simplify right side
    2,985.49x = 7,446,744.70
  5. Step 5: Solve for x
    x = 7,446,744.70/2,985.49
  6. Step 6: Final answer
    x = 2,494.31

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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.