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Finding the Fourth Proportional to 6,470.21, 8,925.81 and 3,815.84

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Solution

The fourth proportional to 6,470.21, 8,925.81 and 3,815.84 is: 5,264.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,470.21 : 8,925.81 = 3,815.84 : x
  2. Step 2: Convert to fraction form
    6,470.21/8,925.81 = 3,815.84/x
  3. Step 3: Cross multiply
    6,470.21x = 8,925.81 × 3,815.84
  4. Step 4: Simplify right side
    6,470.21x = 34,059,462.83
  5. Step 5: Solve for x
    x = 34,059,462.83/6,470.21
  6. Step 6: Final answer
    x = 5,264.04

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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.