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Finding the Fourth Proportional to 7,903.05, 10,906.49 and 5,216.63

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Solution

The fourth proportional to 7,903.05, 10,906.49 and 5,216.63 is: 7,199.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,903.05 : 10,906.49 = 5,216.63 : x
  2. Step 2: Convert to fraction form
    7,903.05/10,906.49 = 5,216.63/x
  3. Step 3: Cross multiply
    7,903.05x = 10,906.49 × 5,216.63
  4. Step 4: Simplify right side
    7,903.05x = 56,895,075.43
  5. Step 5: Solve for x
    x = 56,895,075.43/7,903.05
  6. Step 6: Final answer
    x = 7,199.13

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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.