Home / 4,782.14-7,172.63-1,272.40

Finding the Fourth Proportional to 4,782.14, 7,172.63 and 1,272.40

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Solution

The fourth proportional to 4,782.14, 7,172.63 and 1,272.40 is: 1,908.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,782.14 : 7,172.63 = 1,272.40 : x
  2. Step 2: Convert to fraction form
    4,782.14/7,172.63 = 1,272.40/x
  3. Step 3: Cross multiply
    4,782.14x = 7,172.63 × 1,272.40
  4. Step 4: Simplify right side
    4,782.14x = 9,126,454.41
  5. Step 5: Solve for x
    x = 9,126,454.41/4,782.14
  6. Step 6: Final answer
    x = 1,908.45

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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.