Home / 2,947.80-4,421.70-2,674.20

Finding the Fourth Proportional to 2,947.80, 4,421.70 and 2,674.20

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Solution

The fourth proportional to 2,947.80, 4,421.70 and 2,674.20 is: 4,011.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,947.80 : 4,421.70 = 2,674.20 : x
  2. Step 2: Convert to fraction form
    2,947.80/4,421.70 = 2,674.20/x
  3. Step 3: Cross multiply
    2,947.80x = 4,421.70 × 2,674.20
  4. Step 4: Simplify right side
    2,947.80x = 11,824,510.14
  5. Step 5: Solve for x
    x = 11,824,510.14/2,947.80
  6. Step 6: Final answer
    x = 4,011.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.