Home / 5,079.64-7,619.40-1,381.81

Finding the Fourth Proportional to 5,079.64, 7,619.40 and 1,381.81

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Solution

The fourth proportional to 5,079.64, 7,619.40 and 1,381.81 is: 2,072.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,079.64 : 7,619.40 = 1,381.81 : x
  2. Step 2: Convert to fraction form
    5,079.64/7,619.40 = 1,381.81/x
  3. Step 3: Cross multiply
    5,079.64x = 7,619.40 × 1,381.81
  4. Step 4: Simplify right side
    5,079.64x = 10,528,564.18
  5. Step 5: Solve for x
    x = 10,528,564.18/5,079.64
  6. Step 6: Final answer
    x = 2,072.70

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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.