Home / 6,942.32-9,579.28-4,109.76

Finding the Fourth Proportional to 6,942.32, 9,579.28 and 4,109.76

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Solution

The fourth proportional to 6,942.32, 9,579.28 and 4,109.76 is: 5,670.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,942.32 : 9,579.28 = 4,109.76 : x
  2. Step 2: Convert to fraction form
    6,942.32/9,579.28 = 4,109.76/x
  3. Step 3: Cross multiply
    6,942.32x = 9,579.28 × 4,109.76
  4. Step 4: Simplify right side
    6,942.32x = 39,368,541.77
  5. Step 5: Solve for x
    x = 39,368,541.77/6,942.32
  6. Step 6: Final answer
    x = 5,670.80

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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.