Home / 2,638.86-3,641.40-1,459.64

Finding the Fourth Proportional to 2,638.86, 3,641.40 and 1,459.64

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Solution

The fourth proportional to 2,638.86, 3,641.40 and 1,459.64 is: 2,014.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,638.86 : 3,641.40 = 1,459.64 : x
  2. Step 2: Convert to fraction form
    2,638.86/3,641.40 = 1,459.64/x
  3. Step 3: Cross multiply
    2,638.86x = 3,641.40 × 1,459.64
  4. Step 4: Simplify right side
    2,638.86x = 5,315,133.10
  5. Step 5: Solve for x
    x = 5,315,133.10/2,638.86
  6. Step 6: Final answer
    x = 2,014.18

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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.