Home / 6,777.12-9,341.28-5,205.72

Finding the Fourth Proportional to 6,777.12, 9,341.28 and 5,205.72

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Solution

The fourth proportional to 6,777.12, 9,341.28 and 5,205.72 is: 7,175.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,777.12 : 9,341.28 = 5,205.72 : x
  2. Step 2: Convert to fraction form
    6,777.12/9,341.28 = 5,205.72/x
  3. Step 3: Cross multiply
    6,777.12x = 9,341.28 × 5,205.72
  4. Step 4: Simplify right side
    6,777.12x = 48,628,088.12
  5. Step 5: Solve for x
    x = 48,628,088.12/6,777.12
  6. Step 6: Final answer
    x = 7,175.33

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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.