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Finding the Fourth Proportional to 6,411.15, 8,840.41 and 4,168.87

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Solution

The fourth proportional to 6,411.15, 8,840.41 and 4,168.87 is: 5,748.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,411.15 : 8,840.41 = 4,168.87 : x
  2. Step 2: Convert to fraction form
    6,411.15/8,840.41 = 4,168.87/x
  3. Step 3: Cross multiply
    6,411.15x = 8,840.41 × 4,168.87
  4. Step 4: Simplify right side
    6,411.15x = 36,854,465.41
  5. Step 5: Solve for x
    x = 36,854,465.41/6,411.15
  6. Step 6: Final answer
    x = 5,748.50

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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.