Home / 7,321-10,983.40-2,127.02

Finding the Fourth Proportional to 7,321, 10,983.40 and 2,127.02

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Solution

The fourth proportional to 7,321, 10,983.40 and 2,127.02 is: 3,191.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,321 : 10,983.40 = 2,127.02 : x
  2. Step 2: Convert to fraction form
    7,321/10,983.40 = 2,127.02/x
  3. Step 3: Cross multiply
    7,321x = 10,983.40 × 2,127.02
  4. Step 4: Simplify right side
    7,321x = 23,361,911.47
  5. Step 5: Solve for x
    x = 23,361,911.47/7,321
  6. Step 6: Final answer
    x = 3,191.08

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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.