Home / 7,921.02-11,884.16-2,656.55

Finding the Fourth Proportional to 7,921.02, 11,884.16 and 2,656.55

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Solution

The fourth proportional to 7,921.02, 11,884.16 and 2,656.55 is: 3,985.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,921.02 : 11,884.16 = 2,656.55 : x
  2. Step 2: Convert to fraction form
    7,921.02/11,884.16 = 2,656.55/x
  3. Step 3: Cross multiply
    7,921.02x = 11,884.16 × 2,656.55
  4. Step 4: Simplify right side
    7,921.02x = 31,570,812.47
  5. Step 5: Solve for x
    x = 31,570,812.47/7,921.02
  6. Step 6: Final answer
    x = 3,985.70

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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.