Home / 6,904.80-9,528.86-3,920.76

Finding the Fourth Proportional to 6,904.80, 9,528.86 and 3,920.76

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Solution

The fourth proportional to 6,904.80, 9,528.86 and 3,920.76 is: 5,410.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,904.80 : 9,528.86 = 3,920.76 : x
  2. Step 2: Convert to fraction form
    6,904.80/9,528.86 = 3,920.76/x
  3. Step 3: Cross multiply
    6,904.80x = 9,528.86 × 3,920.76
  4. Step 4: Simplify right side
    6,904.80x = 37,360,373.13
  5. Step 5: Solve for x
    x = 37,360,373.13/6,904.80
  6. Step 6: Final answer
    x = 5,410.78

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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.