Home / 2,947.00-4,066.76-1,620.70

Finding the Fourth Proportional to 2,947.00, 4,066.76 and 1,620.70

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Solution

The fourth proportional to 2,947.00, 4,066.76 and 1,620.70 is: 2,236.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.00 : 4,066.76 = 1,620.70 : x
  2. Step 2: Convert to fraction form
    2,947.00/4,066.76 = 1,620.70/x
  3. Step 3: Cross multiply
    2,947.00x = 4,066.76 × 1,620.70
  4. Step 4: Simplify right side
    2,947.00x = 6,590,977.60
  5. Step 5: Solve for x
    x = 6,590,977.60/2,947.00
  6. Step 6: Final answer
    x = 2,236.51

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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.