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Finding the Fourth Proportional to 8,705.09, 12,013.08 and 4,726.20

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Solution

The fourth proportional to 8,705.09, 12,013.08 and 4,726.20 is: 6,522.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.09 : 12,013.08 = 4,726.20 : x
  2. Step 2: Convert to fraction form
    8,705.09/12,013.08 = 4,726.20/x
  3. Step 3: Cross multiply
    8,705.09x = 12,013.08 × 4,726.20
  4. Step 4: Simplify right side
    8,705.09x = 56,776,195.89
  5. Step 5: Solve for x
    x = 56,776,195.89/8,705.09
  6. Step 6: Final answer
    x = 6,522.19

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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.