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Finding the Fourth Proportional to 6,394.70, 8,822.16 and 4,720.10

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Solution

The fourth proportional to 6,394.70, 8,822.16 and 4,720.10 is: 6,511.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,394.70 : 8,822.16 = 4,720.10 : x
  2. Step 2: Convert to fraction form
    6,394.70/8,822.16 = 4,720.10/x
  3. Step 3: Cross multiply
    6,394.70x = 8,822.16 × 4,720.10
  4. Step 4: Simplify right side
    6,394.70x = 41,641,477.42
  5. Step 5: Solve for x
    x = 41,641,477.42/6,394.70
  6. Step 6: Final answer
    x = 6,511.87

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1.5x scale

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.