Home / 2,865.67-3,956.51-1,984.18

Finding the Fourth Proportional to 2,865.67, 3,956.51 and 1,984.18

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Solution

The fourth proportional to 2,865.67, 3,956.51 and 1,984.18 is: 2,739.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.67 : 3,956.51 = 1,984.18 : x
  2. Step 2: Convert to fraction form
    2,865.67/3,956.51 = 1,984.18/x
  3. Step 3: Cross multiply
    2,865.67x = 3,956.51 × 1,984.18
  4. Step 4: Simplify right side
    2,865.67x = 7,850,428.01
  5. Step 5: Solve for x
    x = 7,850,428.01/2,865.67
  6. Step 6: Final answer
    x = 2,739.47

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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.