Home / 2,907.45-4,012.14-1,581.12

Finding the Fourth Proportional to 2,907.45, 4,012.14 and 1,581.12

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Solution

The fourth proportional to 2,907.45, 4,012.14 and 1,581.12 is: 2,181.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,907.45 : 4,012.14 = 1,581.12 : x
  2. Step 2: Convert to fraction form
    2,907.45/4,012.14 = 1,581.12/x
  3. Step 3: Cross multiply
    2,907.45x = 4,012.14 × 1,581.12
  4. Step 4: Simplify right side
    2,907.45x = 6,343,674.80
  5. Step 5: Solve for x
    x = 6,343,674.80/2,907.45
  6. Step 6: Final answer
    x = 2,181.87

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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.