Home / 6,428.48-9,642.60-2,045.88

Finding the Fourth Proportional to 6,428.48, 9,642.60 and 2,045.88

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Solution

The fourth proportional to 6,428.48, 9,642.60 and 2,045.88 is: 3,068.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.48 : 9,642.60 = 2,045.88 : x
  2. Step 2: Convert to fraction form
    6,428.48/9,642.60 = 2,045.88/x
  3. Step 3: Cross multiply
    6,428.48x = 9,642.60 × 2,045.88
  4. Step 4: Simplify right side
    6,428.48x = 19,727,602.49
  5. Step 5: Solve for x
    x = 19,727,602.49/6,428.48
  6. Step 6: Final answer
    x = 3,068.78

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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.