Home / 2,912.77-4,370.55-2,672.20

Finding the Fourth Proportional to 2,912.77, 4,370.55 and 2,672.20

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Solution

The fourth proportional to 2,912.77, 4,370.55 and 2,672.20 is: 4,009.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,912.77 : 4,370.55 = 2,672.20 : x
  2. Step 2: Convert to fraction form
    2,912.77/4,370.55 = 2,672.20/x
  3. Step 3: Cross multiply
    2,912.77x = 4,370.55 × 2,672.20
  4. Step 4: Simplify right side
    2,912.77x = 11,678,983.71
  5. Step 5: Solve for x
    x = 11,678,983.71/2,912.77
  6. Step 6: Final answer
    x = 4,009.58

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1.5x scale

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.