Home / 7,151.40-10,724.55-2,989.21

Finding the Fourth Proportional to 7,151.40, 10,724.55 and 2,989.21

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Solution

The fourth proportional to 7,151.40, 10,724.55 and 2,989.21 is: 4,482.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,151.40 : 10,724.55 = 2,989.21 : x
  2. Step 2: Convert to fraction form
    7,151.40/10,724.55 = 2,989.21/x
  3. Step 3: Cross multiply
    7,151.40x = 10,724.55 × 2,989.21
  4. Step 4: Simplify right side
    7,151.40x = 32,057,932.11
  5. Step 5: Solve for x
    x = 32,057,932.11/7,151.40
  6. Step 6: Final answer
    x = 4,482.75

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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.