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Finding the Fourth Proportional to 8,486.66, 12,726.14 and 4,328.93

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Solution

The fourth proportional to 8,486.66, 12,726.14 and 4,328.93 is: 6,491.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,486.66 : 12,726.14 = 4,328.93 : x
  2. Step 2: Convert to fraction form
    8,486.66/12,726.14 = 4,328.93/x
  3. Step 3: Cross multiply
    8,486.66x = 12,726.14 × 4,328.93
  4. Step 4: Simplify right side
    8,486.66x = 55,090,483.95
  5. Step 5: Solve for x
    x = 55,090,483.95/8,486.66
  6. Step 6: Final answer
    x = 6,491.42

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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.