Home / 2,907.74-4,012.71-1,581.45

Finding the Fourth Proportional to 2,907.74, 4,012.71 and 1,581.45

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Solution

The fourth proportional to 2,907.74, 4,012.71 and 1,581.45 is: 2,182.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.74 : 4,012.71 = 1,581.45 : x
  2. Step 2: Convert to fraction form
    2,907.74/4,012.71 = 1,581.45/x
  3. Step 3: Cross multiply
    2,907.74x = 4,012.71 × 1,581.45
  4. Step 4: Simplify right side
    2,907.74x = 6,345,879.25
  5. Step 5: Solve for x
    x = 6,345,879.25/2,907.74
  6. Step 6: Final answer
    x = 2,182.41

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1.5x scale

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.