Home / 7,901.77-11,827.80-5,422.09

Finding the Fourth Proportional to 7,901.77, 11,827.80 and 5,422.09

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Solution

The fourth proportional to 7,901.77, 11,827.80 and 5,422.09 is: 8,116.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,901.77 : 11,827.80 = 5,422.09 : x
  2. Step 2: Convert to fraction form
    7,901.77/11,827.80 = 5,422.09/x
  3. Step 3: Cross multiply
    7,901.77x = 11,827.80 × 5,422.09
  4. Step 4: Simplify right side
    7,901.77x = 64,131,396.10
  5. Step 5: Solve for x
    x = 64,131,396.10/7,901.77
  6. Step 6: Final answer
    x = 8,116.08

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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.