Home / 7,180.49-10,772.46-3,478.40

Finding the Fourth Proportional to 7,180.49, 10,772.46 and 3,478.40

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Solution

The fourth proportional to 7,180.49, 10,772.46 and 3,478.40 is: 5,218.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,180.49 : 10,772.46 = 3,478.40 : x
  2. Step 2: Convert to fraction form
    7,180.49/10,772.46 = 3,478.40/x
  3. Step 3: Cross multiply
    7,180.49x = 10,772.46 × 3,478.40
  4. Step 4: Simplify right side
    7,180.49x = 37,470,853.61
  5. Step 5: Solve for x
    x = 37,470,853.61/7,180.49
  6. Step 6: Final answer
    x = 5,218.43

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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.