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Finding the Fourth Proportional to 7,898.69, 10,899.65 and 4,361.63

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Solution

The fourth proportional to 7,898.69, 10,899.65 and 4,361.63 is: 6,018.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,898.69 : 10,899.65 = 4,361.63 : x
  2. Step 2: Convert to fraction form
    7,898.69/10,899.65 = 4,361.63/x
  3. Step 3: Cross multiply
    7,898.69x = 10,899.65 × 4,361.63
  4. Step 4: Simplify right side
    7,898.69x = 47,540,172.30
  5. Step 5: Solve for x
    x = 47,540,172.30/7,898.69
  6. Step 6: Final answer
    x = 6,018.74

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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.