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Finding the Fourth Proportional to 6,612.65, 9,921.55 and 2,912.28

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Solution

The fourth proportional to 6,612.65, 9,921.55 and 2,912.28 is: 4,369.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,612.65 : 9,921.55 = 2,912.28 : x
  2. Step 2: Convert to fraction form
    6,612.65/9,921.55 = 2,912.28/x
  3. Step 3: Cross multiply
    6,612.65x = 9,921.55 × 2,912.28
  4. Step 4: Simplify right side
    6,612.65x = 28,894,303.53
  5. Step 5: Solve for x
    x = 28,894,303.53/6,612.65
  6. Step 6: Final answer
    x = 4,369.55

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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.