Home / 4,780.74-7,170.06-3,390.18

Finding the Fourth Proportional to 4,780.74, 7,170.06 and 3,390.18

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Solution

The fourth proportional to 4,780.74, 7,170.06 and 3,390.18 is: 5,084.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,780.74 : 7,170.06 = 3,390.18 : x
  2. Step 2: Convert to fraction form
    4,780.74/7,170.06 = 3,390.18/x
  3. Step 3: Cross multiply
    4,780.74x = 7,170.06 × 3,390.18
  4. Step 4: Simplify right side
    4,780.74x = 24,307,794.01
  5. Step 5: Solve for x
    x = 24,307,794.01/4,780.74
  6. Step 6: Final answer
    x = 5,084.53

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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.