Home / 4,781.65-7,172.79-1,271.61

Finding the Fourth Proportional to 4,781.65, 7,172.79 and 1,271.61

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Solution

The fourth proportional to 4,781.65, 7,172.79 and 1,271.61 is: 1,907.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,781.65 : 7,172.79 = 1,271.61 : x
  2. Step 2: Convert to fraction form
    4,781.65/7,172.79 = 1,271.61/x
  3. Step 3: Cross multiply
    4,781.65x = 7,172.79 × 1,271.61
  4. Step 4: Simplify right side
    4,781.65x = 9,120,991.49
  5. Step 5: Solve for x
    x = 9,120,991.49/4,781.65
  6. Step 6: Final answer
    x = 1,907.50

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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.