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Finding the Fourth Proportional to 7,886.99, 11,828.81 and 2,956.99

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Solution

The fourth proportional to 7,886.99, 11,828.81 and 2,956.99 is: 4,434.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.99 : 11,828.81 = 2,956.99 : x
  2. Step 2: Convert to fraction form
    7,886.99/11,828.81 = 2,956.99/x
  3. Step 3: Cross multiply
    7,886.99x = 11,828.81 × 2,956.99
  4. Step 4: Simplify right side
    7,886.99x = 34,977,598.95
  5. Step 5: Solve for x
    x = 34,977,598.95/7,886.99
  6. Step 6: Final answer
    x = 4,434.85

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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.