Home / 3,921,342.12-5,411,344.14-2,178,966.51

Finding the Fourth Proportional to 3,921,342.12, 5,411,344.14 and 2,178,966.51

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Solution

The fourth proportional to 3,921,342.12, 5,411,344.14 and 2,178,966.51 is: 3,006,913.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921,342.12 : 5,411,344.14 = 2,178,966.51 : x
  2. Step 2: Convert to fraction form
    3,921,342.12/5,411,344.14 = 2,178,966.51/x
  3. Step 3: Cross multiply
    3,921,342.12x = 5,411,344.14 × 2,178,966.51
  4. Step 4: Simplify right side
    3,921,342.12x = 11,791,137,655,144.75
  5. Step 5: Solve for x
    x = 11,791,137,655,144.75/3,921,342.12
  6. Step 6: Final answer
    x = 3,006,913.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.