Home / 8,258.66-11,384.36-6,487.19

Finding the Fourth Proportional to 8,258.66, 11,384.36 and 6,487.19

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Solution

The fourth proportional to 8,258.66, 11,384.36 and 6,487.19 is: 8,942.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,258.66 : 11,384.36 = 6,487.19 : x
  2. Step 2: Convert to fraction form
    8,258.66/11,384.36 = 6,487.19/x
  3. Step 3: Cross multiply
    8,258.66x = 11,384.36 × 6,487.19
  4. Step 4: Simplify right side
    8,258.66x = 73,852,520.50
  5. Step 5: Solve for x
    x = 73,852,520.50/8,258.66
  6. Step 6: Final answer
    x = 8,942.44

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Double scale
Find fourth proportional to 8,259.66, 11,385.74 and 6,488.19
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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.