Home / 2,947.67-4,066.76-1,828.20

Finding the Fourth Proportional to 2,947.67, 4,066.76 and 1,828.20

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Solution

The fourth proportional to 2,947.67, 4,066.76 and 1,828.20 is: 2,522.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.67 : 4,066.76 = 1,828.20 : x
  2. Step 2: Convert to fraction form
    2,947.67/4,066.76 = 1,828.20/x
  3. Step 3: Cross multiply
    2,947.67x = 4,066.76 × 1,828.20
  4. Step 4: Simplify right side
    2,947.67x = 7,434,850.63
  5. Step 5: Solve for x
    x = 7,434,850.63/2,947.67
  6. Step 6: Final answer
    x = 2,522.28

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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.