Home / 7,477.81-11,219.31-3,320.74

Finding the Fourth Proportional to 7,477.81, 11,219.31 and 3,320.74

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Solution

The fourth proportional to 7,477.81, 11,219.31 and 3,320.74 is: 4,982.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,477.81 : 11,219.31 = 3,320.74 : x
  2. Step 2: Convert to fraction form
    7,477.81/11,219.31 = 3,320.74/x
  3. Step 3: Cross multiply
    7,477.81x = 11,219.31 × 3,320.74
  4. Step 4: Simplify right side
    7,477.81x = 37,256,382.13
  5. Step 5: Solve for x
    x = 37,256,382.13/7,477.81
  6. Step 6: Final answer
    x = 4,982.26

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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.