Home / 7,478.86-11,215.81-2,480.08

Finding the Fourth Proportional to 7,478.86, 11,215.81 and 2,480.08

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Solution

The fourth proportional to 7,478.86, 11,215.81 and 2,480.08 is: 3,719.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,478.86 : 11,215.81 = 2,480.08 : x
  2. Step 2: Convert to fraction form
    7,478.86/11,215.81 = 2,480.08/x
  3. Step 3: Cross multiply
    7,478.86x = 11,215.81 × 2,480.08
  4. Step 4: Simplify right side
    7,478.86x = 27,816,106.06
  5. Step 5: Solve for x
    x = 27,816,106.06/7,478.86
  6. Step 6: Final answer
    x = 3,719.30

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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.