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Finding the Fourth Proportional to 7,762.35, 11,643.40 and 1,918.95

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Solution

The fourth proportional to 7,762.35, 11,643.40 and 1,918.95 is: 2,878.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,762.35 : 11,643.40 = 1,918.95 : x
  2. Step 2: Convert to fraction form
    7,762.35/11,643.40 = 1,918.95/x
  3. Step 3: Cross multiply
    7,762.35x = 11,643.40 × 1,918.95
  4. Step 4: Simplify right side
    7,762.35x = 22,343,136.34
  5. Step 5: Solve for x
    x = 22,343,136.34/7,762.35
  6. Step 6: Final answer
    x = 2,878.40

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