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Finding the Fourth Proportional to 7,930.35, 11,117.85 and 7,930.35

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Solution

The fourth proportional to 7,930.35, 11,117.85 and 7,930.35 is: 11,117.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,930.35 : 11,117.85 = 7,930.35 : x
  2. Step 2: Convert to fraction form
    7,930.35/11,117.85 = 7,930.35/x
  3. Step 3: Cross multiply
    7,930.35x = 11,117.85 × 7,930.35
  4. Step 4: Simplify right side
    7,930.35x = 88,168,441.75
  5. Step 5: Solve for x
    x = 88,168,441.75/7,930.35
  6. Step 6: Final answer
    x = 11,117.85

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.