Home / 7,020.65-10,521.87-2,855.81

Finding the Fourth Proportional to 7,020.65, 10,521.87 and 2,855.81

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Solution

The fourth proportional to 7,020.65, 10,521.87 and 2,855.81 is: 4,280.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,020.65 : 10,521.87 = 2,855.81 : x
  2. Step 2: Convert to fraction form
    7,020.65/10,521.87 = 2,855.81/x
  3. Step 3: Cross multiply
    7,020.65x = 10,521.87 × 2,855.81
  4. Step 4: Simplify right side
    7,020.65x = 30,048,461.56
  5. Step 5: Solve for x
    x = 30,048,461.56/7,020.65
  6. Step 6: Final answer
    x = 4,280.01

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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.