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Finding the Fourth Proportional to 8,705.60, 12,013.69 and 4,726.68

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Solution

The fourth proportional to 8,705.60, 12,013.69 and 4,726.68 is: 6,522.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.60 : 12,013.69 = 4,726.68 : x
  2. Step 2: Convert to fraction form
    8,705.60/12,013.69 = 4,726.68/x
  3. Step 3: Cross multiply
    8,705.60x = 12,013.69 × 4,726.68
  4. Step 4: Simplify right side
    8,705.60x = 56,784,868.25
  5. Step 5: Solve for x
    x = 56,784,868.25/8,705.60
  6. Step 6: Final answer
    x = 6,522.80

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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.