Home / 7,918.01-11,872.63-5,422.05

Finding the Fourth Proportional to 7,918.01, 11,872.63 and 5,422.05

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Solution

The fourth proportional to 7,918.01, 11,872.63 and 5,422.05 is: 8,130.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,918.01 : 11,872.63 = 5,422.05 : x
  2. Step 2: Convert to fraction form
    7,918.01/11,872.63 = 5,422.05/x
  3. Step 3: Cross multiply
    7,918.01x = 11,872.63 × 5,422.05
  4. Step 4: Simplify right side
    7,918.01x = 64,374,029.36
  5. Step 5: Solve for x
    x = 64,374,029.36/7,918.01
  6. Step 6: Final answer
    x = 8,130.08

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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.