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Finding the Fourth Proportional to 6,435.99, 8,881.79 and 3,641.49

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Solution

The fourth proportional to 6,435.99, 8,881.79 and 3,641.49 is: 5,025.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,435.99 : 8,881.79 = 3,641.49 : x
  2. Step 2: Convert to fraction form
    6,435.99/8,881.79 = 3,641.49/x
  3. Step 3: Cross multiply
    6,435.99x = 8,881.79 × 3,641.49
  4. Step 4: Simplify right side
    6,435.99x = 32,342,931.26
  5. Step 5: Solve for x
    x = 32,342,931.26/6,435.99
  6. Step 6: Final answer
    x = 5,025.32

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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.