Home / 7,875.94-11,815.13-2,946.28

Finding the Fourth Proportional to 7,875.94, 11,815.13 and 2,946.28

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Solution

The fourth proportional to 7,875.94, 11,815.13 and 2,946.28 is: 4,419.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,875.94 : 11,815.13 = 2,946.28 : x
  2. Step 2: Convert to fraction form
    7,875.94/11,815.13 = 2,946.28/x
  3. Step 3: Cross multiply
    7,875.94x = 11,815.13 × 2,946.28
  4. Step 4: Simplify right side
    7,875.94x = 34,810,636.95
  5. Step 5: Solve for x
    x = 34,810,636.95/7,875.94
  6. Step 6: Final answer
    x = 4,419.87

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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.