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Finding the Fourth Proportional to 6,208.60, 9,312.90 and 2,312.20

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Solution

The fourth proportional to 6,208.60, 9,312.90 and 2,312.20 is: 3,468.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,208.60 : 9,312.90 = 2,312.20 : x
  2. Step 2: Convert to fraction form
    6,208.60/9,312.90 = 2,312.20/x
  3. Step 3: Cross multiply
    6,208.60x = 9,312.90 × 2,312.20
  4. Step 4: Simplify right side
    6,208.60x = 21,533,287.38
  5. Step 5: Solve for x
    x = 21,533,287.38/6,208.60
  6. Step 6: Final answer
    x = 3,468.30

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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.