Home / 8,065.18-11,133.70-5,380.87

Finding the Fourth Proportional to 8,065.18, 11,133.70 and 5,380.87

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Solution

The fourth proportional to 8,065.18, 11,133.70 and 5,380.87 is: 7,428.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,065.18 : 11,133.70 = 5,380.87 : x
  2. Step 2: Convert to fraction form
    8,065.18/11,133.70 = 5,380.87/x
  3. Step 3: Cross multiply
    8,065.18x = 11,133.70 × 5,380.87
  4. Step 4: Simplify right side
    8,065.18x = 59,908,992.32
  5. Step 5: Solve for x
    x = 59,908,992.32/8,065.18
  6. Step 6: Final answer
    x = 7,428.10

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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.