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Finding the Fourth Proportional to 7,717.21, 10,649.95 and 4,731.32

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Solution

The fourth proportional to 7,717.21, 10,649.95 and 4,731.32 is: 6,529.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,717.21 : 10,649.95 = 4,731.32 : x
  2. Step 2: Convert to fraction form
    7,717.21/10,649.95 = 4,731.32/x
  3. Step 3: Cross multiply
    7,717.21x = 10,649.95 × 4,731.32
  4. Step 4: Simplify right side
    7,717.21x = 50,388,336.23
  5. Step 5: Solve for x
    x = 50,388,336.23/7,717.21
  6. Step 6: Final answer
    x = 6,529.35

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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.