Home / 3,071.76-4,238.12-1,812.36

Finding the Fourth Proportional to 3,071.76, 4,238.12 and 1,812.36

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Solution

The fourth proportional to 3,071.76, 4,238.12 and 1,812.36 is: 2,500.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.76 : 4,238.12 = 1,812.36 : x
  2. Step 2: Convert to fraction form
    3,071.76/4,238.12 = 1,812.36/x
  3. Step 3: Cross multiply
    3,071.76x = 4,238.12 × 1,812.36
  4. Step 4: Simplify right side
    3,071.76x = 7,680,999.16
  5. Step 5: Solve for x
    x = 7,680,999.16/3,071.76
  6. Step 6: Final answer
    x = 2,500.52

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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.