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Finding the Fourth Proportional to 7,218.51, 10,830.53 and 2,539.01

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Solution

The fourth proportional to 7,218.51, 10,830.53 and 2,539.01 is: 3,809.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,218.51 : 10,830.53 = 2,539.01 : x
  2. Step 2: Convert to fraction form
    7,218.51/10,830.53 = 2,539.01/x
  3. Step 3: Cross multiply
    7,218.51x = 10,830.53 × 2,539.01
  4. Step 4: Simplify right side
    7,218.51x = 27,498,776.17
  5. Step 5: Solve for x
    x = 27,498,776.17/7,218.51
  6. Step 6: Final answer
    x = 3,809.48

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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.