Home / 9,112.98-12,575.85-5,135.37

Finding the Fourth Proportional to 9,112.98, 12,575.85 and 5,135.37

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Solution

The fourth proportional to 9,112.98, 12,575.85 and 5,135.37 is: 7,086.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,112.98 : 12,575.85 = 5,135.37 : x
  2. Step 2: Convert to fraction form
    9,112.98/12,575.85 = 5,135.37/x
  3. Step 3: Cross multiply
    9,112.98x = 12,575.85 × 5,135.37
  4. Step 4: Simplify right side
    9,112.98x = 64,581,642.81
  5. Step 5: Solve for x
    x = 64,581,642.81/9,112.98
  6. Step 6: Final answer
    x = 7,086.78

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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.