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Finding the Fourth Proportional to 2,991.80, 4,482.30 and 2,527.40

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Solution

The fourth proportional to 2,991.80, 4,482.30 and 2,527.40 is: 3,786.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,991.80 : 4,482.30 = 2,527.40 : x
  2. Step 2: Convert to fraction form
    2,991.80/4,482.30 = 2,527.40/x
  3. Step 3: Cross multiply
    2,991.80x = 4,482.30 × 2,527.40
  4. Step 4: Simplify right side
    2,991.80x = 11,328,565.02
  5. Step 5: Solve for x
    x = 11,328,565.02/2,991.80
  6. Step 6: Final answer
    x = 3,786.54

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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.