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Finding the Fourth Proportional to 6,291.12, 8,668.95 and 4,866.15

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Solution

The fourth proportional to 6,291.12, 8,668.95 and 4,866.15 is: 6,705.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,291.12 : 8,668.95 = 4,866.15 : x
  2. Step 2: Convert to fraction form
    6,291.12/8,668.95 = 4,866.15/x
  3. Step 3: Cross multiply
    6,291.12x = 8,668.95 × 4,866.15
  4. Step 4: Simplify right side
    6,291.12x = 42,184,414.61
  5. Step 5: Solve for x
    x = 42,184,414.61/6,291.12
  6. Step 6: Final answer
    x = 6,705.39

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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.