Home / 7,720.86-11,581.27-1,877.43

Finding the Fourth Proportional to 7,720.86, 11,581.27 and 1,877.43

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Solution

The fourth proportional to 7,720.86, 11,581.27 and 1,877.43 is: 2,816.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,720.86 : 11,581.27 = 1,877.43 : x
  2. Step 2: Convert to fraction form
    7,720.86/11,581.27 = 1,877.43/x
  3. Step 3: Cross multiply
    7,720.86x = 11,581.27 × 1,877.43
  4. Step 4: Simplify right side
    7,720.86x = 21,743,023.74
  5. Step 5: Solve for x
    x = 21,743,023.74/7,720.86
  6. Step 6: Final answer
    x = 2,816.14

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1.5x scale

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.