Home / 7,153.40-10,727.55-2,991.21

Finding the Fourth Proportional to 7,153.40, 10,727.55 and 2,991.21

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Solution

The fourth proportional to 7,153.40, 10,727.55 and 2,991.21 is: 4,485.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,153.40 : 10,727.55 = 2,991.21 : x
  2. Step 2: Convert to fraction form
    7,153.40/10,727.55 = 2,991.21/x
  3. Step 3: Cross multiply
    7,153.40x = 10,727.55 × 2,991.21
  4. Step 4: Simplify right side
    7,153.40x = 32,088,354.84
  5. Step 5: Solve for x
    x = 32,088,354.84/7,153.40
  6. Step 6: Final answer
    x = 4,485.75

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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.