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Finding the Fourth Proportional to 7,898.10, 10,898.94 and 4,913.84

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Solution

The fourth proportional to 7,898.10, 10,898.94 and 4,913.84 is: 6,780.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.10 : 10,898.94 = 4,913.84 : x
  2. Step 2: Convert to fraction form
    7,898.10/10,898.94 = 4,913.84/x
  3. Step 3: Cross multiply
    7,898.10x = 10,898.94 × 4,913.84
  4. Step 4: Simplify right side
    7,898.10x = 53,555,647.33
  5. Step 5: Solve for x
    x = 53,555,647.33/7,898.10
  6. Step 6: Final answer
    x = 6,780.83

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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.