Home / 5,280.11-7,919.62-1,384.01

Finding the Fourth Proportional to 5,280.11, 7,919.62 and 1,384.01

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Solution

The fourth proportional to 5,280.11, 7,919.62 and 1,384.01 is: 2,075.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,280.11 : 7,919.62 = 1,384.01 : x
  2. Step 2: Convert to fraction form
    5,280.11/7,919.62 = 1,384.01/x
  3. Step 3: Cross multiply
    5,280.11x = 7,919.62 × 1,384.01
  4. Step 4: Simplify right side
    5,280.11x = 10,960,790.22
  5. Step 5: Solve for x
    x = 10,960,790.22/5,280.11
  6. Step 6: Final answer
    x = 2,075.87

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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.