Home / 4,218.89-6,326.51-1,620

Finding the Fourth Proportional to 4,218.89, 6,326.51 and 1,620

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Solution

The fourth proportional to 4,218.89, 6,326.51 and 1,620 is: 2,429.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,218.89 : 6,326.51 = 1,620 : x
  2. Step 2: Convert to fraction form
    4,218.89/6,326.51 = 1,620/x
  3. Step 3: Cross multiply
    4,218.89x = 6,326.51 × 1,620
  4. Step 4: Simplify right side
    4,218.89x = 10,248,938.10
  5. Step 5: Solve for x
    x = 10,248,938.10/4,218.89
  6. Step 6: Final answer
    x = 2,429.30

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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.