Home / 2,861.07-3,948.70-1,742.66

Finding the Fourth Proportional to 2,861.07, 3,948.70 and 1,742.66

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Solution

The fourth proportional to 2,861.07, 3,948.70 and 1,742.66 is: 2,405.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,861.07 : 3,948.70 = 1,742.66 : x
  2. Step 2: Convert to fraction form
    2,861.07/3,948.70 = 1,742.66/x
  3. Step 3: Cross multiply
    2,861.07x = 3,948.70 × 1,742.66
  4. Step 4: Simplify right side
    2,861.07x = 6,881,247.06
  5. Step 5: Solve for x
    x = 6,881,247.06/2,861.07
  6. Step 6: Final answer
    x = 2,405.13

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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.