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Finding the Fourth Proportional to 7,888.86, 11,834.64 and 3,506.40

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Solution

The fourth proportional to 7,888.86, 11,834.64 and 3,506.40 is: 5,260.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,888.86 : 11,834.64 = 3,506.40 : x
  2. Step 2: Convert to fraction form
    7,888.86/11,834.64 = 3,506.40/x
  3. Step 3: Cross multiply
    7,888.86x = 11,834.64 × 3,506.40
  4. Step 4: Simplify right side
    7,888.86x = 41,496,981.70
  5. Step 5: Solve for x
    x = 41,496,981.70/7,888.86
  6. Step 6: Final answer
    x = 5,260.20

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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.