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Finding the Fourth Proportional to 4,455.40, 6,684.70 and 4,295.40

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Solution

The fourth proportional to 4,455.40, 6,684.70 and 4,295.40 is: 6,444.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,455.40 : 6,684.70 = 4,295.40 : x
  2. Step 2: Convert to fraction form
    4,455.40/6,684.70 = 4,295.40/x
  3. Step 3: Cross multiply
    4,455.40x = 6,684.70 × 4,295.40
  4. Step 4: Simplify right side
    4,455.40x = 28,713,460.38
  5. Step 5: Solve for x
    x = 28,713,460.38/4,455.40
  6. Step 6: Final answer
    x = 6,444.64

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.