Home / 7,877.49-11,815.82-2,946.75

Finding the Fourth Proportional to 7,877.49, 11,815.82 and 2,946.75

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Solution

The fourth proportional to 7,877.49, 11,815.82 and 2,946.75 is: 4,419.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,877.49 : 11,815.82 = 2,946.75 : x
  2. Step 2: Convert to fraction form
    7,877.49/11,815.82 = 2,946.75/x
  3. Step 3: Cross multiply
    7,877.49x = 11,815.82 × 2,946.75
  4. Step 4: Simplify right side
    7,877.49x = 34,818,317.22
  5. Step 5: Solve for x
    x = 34,818,317.22/7,877.49
  6. Step 6: Final answer
    x = 4,419.98

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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.