Home / 3,812.09-5,718.60-1,312.61

Finding the Fourth Proportional to 3,812.09, 5,718.60 and 1,312.61

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Solution

The fourth proportional to 3,812.09, 5,718.60 and 1,312.61 is: 1,969.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,812.09 : 5,718.60 = 1,312.61 : x
  2. Step 2: Convert to fraction form
    3,812.09/5,718.60 = 1,312.61/x
  3. Step 3: Cross multiply
    3,812.09x = 5,718.60 × 1,312.61
  4. Step 4: Simplify right side
    3,812.09x = 7,506,262.95
  5. Step 5: Solve for x
    x = 7,506,262.95/3,812.09
  6. Step 6: Final answer
    x = 1,969.07

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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.