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Finding the Fourth Proportional to 7,886.10, 11,830.23 and 2,887.81

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Solution

The fourth proportional to 7,886.10, 11,830.23 and 2,887.81 is: 4,332.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,886.10 : 11,830.23 = 2,887.81 : x
  2. Step 2: Convert to fraction form
    7,886.10/11,830.23 = 2,887.81/x
  3. Step 3: Cross multiply
    7,886.10x = 11,830.23 × 2,887.81
  4. Step 4: Simplify right side
    7,886.10x = 34,163,456.50
  5. Step 5: Solve for x
    x = 34,163,456.50/7,886.10
  6. Step 6: Final answer
    x = 4,332.11

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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.