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Finding the Fourth Proportional to 8,430.14, 12,640.95 and 4,483.69

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Solution

The fourth proportional to 8,430.14, 12,640.95 and 4,483.69 is: 6,723.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,430.14 : 12,640.95 = 4,483.69 : x
  2. Step 2: Convert to fraction form
    8,430.14/12,640.95 = 4,483.69/x
  3. Step 3: Cross multiply
    8,430.14x = 12,640.95 × 4,483.69
  4. Step 4: Simplify right side
    8,430.14x = 56,678,101.11
  5. Step 5: Solve for x
    x = 56,678,101.11/8,430.14
  6. Step 6: Final answer
    x = 6,723.27

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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.