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Finding the Fourth Proportional to 8,705.36, 13,058.04 and 5,013.20

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Solution

The fourth proportional to 8,705.36, 13,058.04 and 5,013.20 is: 7,519.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,705.36 : 13,058.04 = 5,013.20 : x
  2. Step 2: Convert to fraction form
    8,705.36/13,058.04 = 5,013.20/x
  3. Step 3: Cross multiply
    8,705.36x = 13,058.04 × 5,013.20
  4. Step 4: Simplify right side
    8,705.36x = 65,462,566.13
  5. Step 5: Solve for x
    x = 65,462,566.13/8,705.36
  6. Step 6: Final answer
    x = 7,519.80

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Similar ratio
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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.