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Finding the Fourth Proportional to 7,210.08, 10,812.96 and 3,312

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Solution

The fourth proportional to 7,210.08, 10,812.96 and 3,312 is: 4,967.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,210.08 : 10,812.96 = 3,312 : x
  2. Step 2: Convert to fraction form
    7,210.08/10,812.96 = 3,312/x
  3. Step 3: Cross multiply
    7,210.08x = 10,812.96 × 3,312
  4. Step 4: Simplify right side
    7,210.08x = 35,812,523.52
  5. Step 5: Solve for x
    x = 35,812,523.52/7,210.08
  6. Step 6: Final answer
    x = 4,967.01

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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.