Home / 2,861.31-3,949.08-1,742.67

Finding the Fourth Proportional to 2,861.31, 3,949.08 and 1,742.67

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Solution

The fourth proportional to 2,861.31, 3,949.08 and 1,742.67 is: 2,405.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.31 : 3,949.08 = 1,742.67 : x
  2. Step 2: Convert to fraction form
    2,861.31/3,949.08 = 1,742.67/x
  3. Step 3: Cross multiply
    2,861.31x = 3,949.08 × 1,742.67
  4. Step 4: Simplify right side
    2,861.31x = 6,881,943.24
  5. Step 5: Solve for x
    x = 6,881,943.24/2,861.31
  6. Step 6: Final answer
    x = 2,405.17

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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.