Home / 2,812.32-4,215.60-1,423.08

Finding the Fourth Proportional to 2,812.32, 4,215.60 and 1,423.08

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Solution

The fourth proportional to 2,812.32, 4,215.60 and 1,423.08 is: 2,133.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,812.32 : 4,215.60 = 1,423.08 : x
  2. Step 2: Convert to fraction form
    2,812.32/4,215.60 = 1,423.08/x
  3. Step 3: Cross multiply
    2,812.32x = 4,215.60 × 1,423.08
  4. Step 4: Simplify right side
    2,812.32x = 5,999,136.05
  5. Step 5: Solve for x
    x = 5,999,136.05/2,812.32
  6. Step 6: Final answer
    x = 2,133.16

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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.