Home / 5,477.07-8,215.80-2,145.21

Finding the Fourth Proportional to 5,477.07, 8,215.80 and 2,145.21

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Solution

The fourth proportional to 5,477.07, 8,215.80 and 2,145.21 is: 3,217.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,477.07 : 8,215.80 = 2,145.21 : x
  2. Step 2: Convert to fraction form
    5,477.07/8,215.80 = 2,145.21/x
  3. Step 3: Cross multiply
    5,477.07x = 8,215.80 × 2,145.21
  4. Step 4: Simplify right side
    5,477.07x = 17,624,616.32
  5. Step 5: Solve for x
    x = 17,624,616.32/5,477.07
  6. Step 6: Final answer
    x = 3,217.89

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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.