Home / 9,660.05-13,341.38-7,777.86

Finding the Fourth Proportional to 9,660.05, 13,341.38 and 7,777.86

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Solution

The fourth proportional to 9,660.05, 13,341.38 and 7,777.86 is: 10,741.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,660.05 : 13,341.38 = 7,777.86 : x
  2. Step 2: Convert to fraction form
    9,660.05/13,341.38 = 7,777.86/x
  3. Step 3: Cross multiply
    9,660.05x = 13,341.38 × 7,777.86
  4. Step 4: Simplify right side
    9,660.05x = 103,767,418.84
  5. Step 5: Solve for x
    x = 103,767,418.84/9,660.05
  6. Step 6: Final answer
    x = 10,741.92

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1.5x scale

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.