Home / 8,187.30-11,307.20-6,416.10

Finding the Fourth Proportional to 8,187.30, 11,307.20 and 6,416.10

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Solution

The fourth proportional to 8,187.30, 11,307.20 and 6,416.10 is: 8,861.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,187.30 : 11,307.20 = 6,416.10 : x
  2. Step 2: Convert to fraction form
    8,187.30/11,307.20 = 6,416.10/x
  3. Step 3: Cross multiply
    8,187.30x = 11,307.20 × 6,416.10
  4. Step 4: Simplify right side
    8,187.30x = 72,548,093.84
  5. Step 5: Solve for x
    x = 72,548,093.84/8,187.30
  6. Step 6: Final answer
    x = 8,861.05

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Half scale
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Double scale
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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.