Home / 6,428.33-9,642.47-2,045.78

Finding the Fourth Proportional to 6,428.33, 9,642.47 and 2,045.78

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Solution

The fourth proportional to 6,428.33, 9,642.47 and 2,045.78 is: 3,068.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.33 : 9,642.47 = 2,045.78 : x
  2. Step 2: Convert to fraction form
    6,428.33/9,642.47 = 2,045.78/x
  3. Step 3: Cross multiply
    6,428.33x = 9,642.47 × 2,045.78
  4. Step 4: Simplify right side
    6,428.33x = 19,726,313.84
  5. Step 5: Solve for x
    x = 19,726,313.84/6,428.33
  6. Step 6: Final answer
    x = 3,068.66

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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.