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Finding the Fourth Proportional to 9,316.70, 12,818.90 and 8,053.64

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Solution

The fourth proportional to 9,316.70, 12,818.90 and 8,053.64 is: 11,081.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316.70 : 12,818.90 = 8,053.64 : x
  2. Step 2: Convert to fraction form
    9,316.70/12,818.90 = 8,053.64/x
  3. Step 3: Cross multiply
    9,316.70x = 12,818.90 × 8,053.64
  4. Step 4: Simplify right side
    9,316.70x = 103,238,805.80
  5. Step 5: Solve for x
    x = 103,238,805.80/9,316.70
  6. Step 6: Final answer
    x = 11,081.05

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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.