Home / 3,890.13-5,368.40-2,318.32

Finding the Fourth Proportional to 3,890.13, 5,368.40 and 2,318.32

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Solution

The fourth proportional to 3,890.13, 5,368.40 and 2,318.32 is: 3,199.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,890.13 : 5,368.40 = 2,318.32 : x
  2. Step 2: Convert to fraction form
    3,890.13/5,368.40 = 2,318.32/x
  3. Step 3: Cross multiply
    3,890.13x = 5,368.40 × 2,318.32
  4. Step 4: Simplify right side
    3,890.13x = 12,445,669.09
  5. Step 5: Solve for x
    x = 12,445,669.09/3,890.13
  6. Step 6: Final answer
    x = 3,199.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.