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Finding the Fourth Proportional to 6,428.70, 8,871.12 and 3,595.93

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Solution

The fourth proportional to 6,428.70, 8,871.12 and 3,595.93 is: 4,962.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,428.70 : 8,871.12 = 3,595.93 : x
  2. Step 2: Convert to fraction form
    6,428.70/8,871.12 = 3,595.93/x
  3. Step 3: Cross multiply
    6,428.70x = 8,871.12 × 3,595.93
  4. Step 4: Simplify right side
    6,428.70x = 31,899,904.36
  5. Step 5: Solve for x
    x = 31,899,904.36/6,428.70
  6. Step 6: Final answer
    x = 4,962.11

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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.