Home / 6,428.05-8,871.65-4,070.41

Finding the Fourth Proportional to 6,428.05, 8,871.65 and 4,070.41

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Solution

The fourth proportional to 6,428.05, 8,871.65 and 4,070.41 is: 5,617.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.05 : 8,871.65 = 4,070.41 : x
  2. Step 2: Convert to fraction form
    6,428.05/8,871.65 = 4,070.41/x
  3. Step 3: Cross multiply
    6,428.05x = 8,871.65 × 4,070.41
  4. Step 4: Simplify right side
    6,428.05x = 36,111,252.88
  5. Step 5: Solve for x
    x = 36,111,252.88/6,428.05
  6. Step 6: Final answer
    x = 5,617.76

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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.