Home / 2,907.80-4,012.66-1,581.51

Finding the Fourth Proportional to 2,907.80, 4,012.66 and 1,581.51

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Solution

The fourth proportional to 2,907.80, 4,012.66 and 1,581.51 is: 2,182.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.80 : 4,012.66 = 1,581.51 : x
  2. Step 2: Convert to fraction form
    2,907.80/4,012.66 = 1,581.51/x
  3. Step 3: Cross multiply
    2,907.80x = 4,012.66 × 1,581.51
  4. Step 4: Simplify right side
    2,907.80x = 6,346,047.47
  5. Step 5: Solve for x
    x = 6,346,047.47/2,907.80
  6. Step 6: Final answer
    x = 2,182.42

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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.