Home / 7,002.40-10,499.55-2,620.30

Finding the Fourth Proportional to 7,002.40, 10,499.55 and 2,620.30

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Solution

The fourth proportional to 7,002.40, 10,499.55 and 2,620.30 is: 3,928.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,002.40 : 10,499.55 = 2,620.30 : x
  2. Step 2: Convert to fraction form
    7,002.40/10,499.55 = 2,620.30/x
  3. Step 3: Cross multiply
    7,002.40x = 10,499.55 × 2,620.30
  4. Step 4: Simplify right side
    7,002.40x = 27,511,970.87
  5. Step 5: Solve for x
    x = 27,511,970.87/7,002.40
  6. Step 6: Final answer
    x = 3,928.93

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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.