Home / 2,911.16-4,011.96-2,071.88

Finding the Fourth Proportional to 2,911.16, 4,011.96 and 2,071.88

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Solution

The fourth proportional to 2,911.16, 4,011.96 and 2,071.88 is: 2,855.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,911.16 : 4,011.96 = 2,071.88 : x
  2. Step 2: Convert to fraction form
    2,911.16/4,011.96 = 2,071.88/x
  3. Step 3: Cross multiply
    2,911.16x = 4,011.96 × 2,071.88
  4. Step 4: Simplify right side
    2,911.16x = 8,312,299.68
  5. Step 5: Solve for x
    x = 8,312,299.68/2,911.16
  6. Step 6: Final answer
    x = 2,855.32

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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.