Home / 9,113.76-12,576.81-5,135.58

Finding the Fourth Proportional to 9,113.76, 12,576.81 and 5,135.58

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Solution

The fourth proportional to 9,113.76, 12,576.81 and 5,135.58 is: 7,087.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,113.76 : 12,576.81 = 5,135.58 : x
  2. Step 2: Convert to fraction form
    9,113.76/12,576.81 = 5,135.58/x
  3. Step 3: Cross multiply
    9,113.76x = 12,576.81 × 5,135.58
  4. Step 4: Simplify right side
    9,113.76x = 64,589,213.90
  5. Step 5: Solve for x
    x = 64,589,213.90/9,113.76
  6. Step 6: Final answer
    x = 7,087.00

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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.