Home / 7,905.78-11,833.80-5,426.10

Finding the Fourth Proportional to 7,905.78, 11,833.80 and 5,426.10

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Solution

The fourth proportional to 7,905.78, 11,833.80 and 5,426.10 is: 8,122.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,905.78 : 11,833.80 = 5,426.10 : x
  2. Step 2: Convert to fraction form
    7,905.78/11,833.80 = 5,426.10/x
  3. Step 3: Cross multiply
    7,905.78x = 11,833.80 × 5,426.10
  4. Step 4: Simplify right side
    7,905.78x = 64,211,382.18
  5. Step 5: Solve for x
    x = 64,211,382.18/7,905.78
  6. Step 6: Final answer
    x = 8,122.08

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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.