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Finding the Fourth Proportional to 8,471.04, 11,686.08 and 5,328.96

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Solution

The fourth proportional to 8,471.04, 11,686.08 and 5,328.96 is: 7,351.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,471.04 : 11,686.08 = 5,328.96 : x
  2. Step 2: Convert to fraction form
    8,471.04/11,686.08 = 5,328.96/x
  3. Step 3: Cross multiply
    8,471.04x = 11,686.08 × 5,328.96
  4. Step 4: Simplify right side
    8,471.04x = 62,274,652.88
  5. Step 5: Solve for x
    x = 62,274,652.88/8,471.04
  6. Step 6: Final answer
    x = 7,351.48

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Half scale
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Double scale
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Similar ratio
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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.