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Finding the Fourth Proportional to 8,307.36, 12,461.04 and 7,800.48

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Solution

The fourth proportional to 8,307.36, 12,461.04 and 7,800.48 is: 11,700.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,307.36 : 12,461.04 = 7,800.48 : x
  2. Step 2: Convert to fraction form
    8,307.36/12,461.04 = 7,800.48/x
  3. Step 3: Cross multiply
    8,307.36x = 12,461.04 × 7,800.48
  4. Step 4: Simplify right side
    8,307.36x = 97,202,093.30
  5. Step 5: Solve for x
    x = 97,202,093.30/8,307.36
  6. Step 6: Final answer
    x = 11,700.72

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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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.