Home / 7,811.12-10,780.60-4,454

Finding the Fourth Proportional to 7,811.12, 10,780.60 and 4,454

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Solution

The fourth proportional to 7,811.12, 10,780.60 and 4,454 is: 6,147.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,811.12 : 10,780.60 = 4,454 : x
  2. Step 2: Convert to fraction form
    7,811.12/10,780.60 = 4,454/x
  3. Step 3: Cross multiply
    7,811.12x = 10,780.60 × 4,454
  4. Step 4: Simplify right side
    7,811.12x = 48,016,792.40
  5. Step 5: Solve for x
    x = 48,016,792.40/7,811.12
  6. Step 6: Final answer
    x = 6,147.24

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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.