Home / 7,881.10-10,872.87-4,522.70

Finding the Fourth Proportional to 7,881.10, 10,872.87 and 4,522.70

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Solution

The fourth proportional to 7,881.10, 10,872.87 and 4,522.70 is: 6,239.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,881.10 : 10,872.87 = 4,522.70 : x
  2. Step 2: Convert to fraction form
    7,881.10/10,872.87 = 4,522.70/x
  3. Step 3: Cross multiply
    7,881.10x = 10,872.87 × 4,522.70
  4. Step 4: Simplify right side
    7,881.10x = 49,174,729.15
  5. Step 5: Solve for x
    x = 49,174,729.15/7,881.10
  6. Step 6: Final answer
    x = 6,239.58

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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.