Home / 5,207.46-7,811.28-1,918.86

Finding the Fourth Proportional to 5,207.46, 7,811.28 and 1,918.86

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Solution

The fourth proportional to 5,207.46, 7,811.28 and 1,918.86 is: 2,878.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,207.46 : 7,811.28 = 1,918.86 : x
  2. Step 2: Convert to fraction form
    5,207.46/7,811.28 = 1,918.86/x
  3. Step 3: Cross multiply
    5,207.46x = 7,811.28 × 1,918.86
  4. Step 4: Simplify right side
    5,207.46x = 14,988,752.74
  5. Step 5: Solve for x
    x = 14,988,752.74/5,207.46
  6. Step 6: Final answer
    x = 2,878.32

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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.