Home / 7,311.72-10,968.64-2,312.40

Finding the Fourth Proportional to 7,311.72, 10,968.64 and 2,312.40

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Solution

The fourth proportional to 7,311.72, 10,968.64 and 2,312.40 is: 3,468.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,311.72 : 10,968.64 = 2,312.40 : x
  2. Step 2: Convert to fraction form
    7,311.72/10,968.64 = 2,312.40/x
  3. Step 3: Cross multiply
    7,311.72x = 10,968.64 × 2,312.40
  4. Step 4: Simplify right side
    7,311.72x = 25,363,883.14
  5. Step 5: Solve for x
    x = 25,363,883.14/7,311.72
  6. Step 6: Final answer
    x = 3,468.94

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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.