Home / 9,113.18-12,575.83-5,135.09

Finding the Fourth Proportional to 9,113.18, 12,575.83 and 5,135.09

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Solution

The fourth proportional to 9,113.18, 12,575.83 and 5,135.09 is: 7,086.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,113.18 : 12,575.83 = 5,135.09 : x
  2. Step 2: Convert to fraction form
    9,113.18/12,575.83 = 5,135.09/x
  3. Step 3: Cross multiply
    9,113.18x = 12,575.83 × 5,135.09
  4. Step 4: Simplify right side
    9,113.18x = 64,577,999.95
  5. Step 5: Solve for x
    x = 64,577,999.95/9,113.18
  6. Step 6: Final answer
    x = 7,086.22

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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.