Home / 3,071.31-4,238.63-1,812.16

Finding the Fourth Proportional to 3,071.31, 4,238.63 and 1,812.16

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Solution

The fourth proportional to 3,071.31, 4,238.63 and 1,812.16 is: 2,500.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.31 : 4,238.63 = 1,812.16 : x
  2. Step 2: Convert to fraction form
    3,071.31/4,238.63 = 1,812.16/x
  3. Step 3: Cross multiply
    3,071.31x = 4,238.63 × 1,812.16
  4. Step 4: Simplify right side
    3,071.31x = 7,681,066.68
  5. Step 5: Solve for x
    x = 7,681,066.68/3,071.31
  6. Step 6: Final answer
    x = 2,500.91

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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.