Home / 3,915.60-5,873.04-1,318.32

Finding the Fourth Proportional to 3,915.60, 5,873.04 and 1,318.32

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Solution

The fourth proportional to 3,915.60, 5,873.04 and 1,318.32 is: 1,977.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,915.60 : 5,873.04 = 1,318.32 : x
  2. Step 2: Convert to fraction form
    3,915.60/5,873.04 = 1,318.32/x
  3. Step 3: Cross multiply
    3,915.60x = 5,873.04 × 1,318.32
  4. Step 4: Simplify right side
    3,915.60x = 7,742,546.09
  5. Step 5: Solve for x
    x = 7,742,546.09/3,915.60
  6. Step 6: Final answer
    x = 1,977.36

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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.