Home / 9,120.18-12,586.14-5,141.64

Finding the Fourth Proportional to 9,120.18, 12,586.14 and 5,141.64

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Solution

The fourth proportional to 9,120.18, 12,586.14 and 5,141.64 is: 7,095.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,120.18 : 12,586.14 = 5,141.64 : x
  2. Step 2: Convert to fraction form
    9,120.18/12,586.14 = 5,141.64/x
  3. Step 3: Cross multiply
    9,120.18x = 12,586.14 × 5,141.64
  4. Step 4: Simplify right side
    9,120.18x = 64,713,400.87
  5. Step 5: Solve for x
    x = 64,713,400.87/9,120.18
  6. Step 6: Final answer
    x = 7,095.63

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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.