Home / 7,479.99-11,220.30-3,320.06

Finding the Fourth Proportional to 7,479.99, 11,220.30 and 3,320.06

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Solution

The fourth proportional to 7,479.99, 11,220.30 and 3,320.06 is: 4,980.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,479.99 : 11,220.30 = 3,320.06 : x
  2. Step 2: Convert to fraction form
    7,479.99/11,220.30 = 3,320.06/x
  3. Step 3: Cross multiply
    7,479.99x = 11,220.30 × 3,320.06
  4. Step 4: Simplify right side
    7,479.99x = 37,252,013.12
  5. Step 5: Solve for x
    x = 37,252,013.12/7,479.99
  6. Step 6: Final answer
    x = 4,980.22

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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.