Home / 7,837.90-10,816.87-5,180.70

Finding the Fourth Proportional to 7,837.90, 10,816.87 and 5,180.70

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Solution

The fourth proportional to 7,837.90, 10,816.87 and 5,180.70 is: 7,149.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,837.90 : 10,816.87 = 5,180.70 : x
  2. Step 2: Convert to fraction form
    7,837.90/10,816.87 = 5,180.70/x
  3. Step 3: Cross multiply
    7,837.90x = 10,816.87 × 5,180.70
  4. Step 4: Simplify right side
    7,837.90x = 56,038,958.41
  5. Step 5: Solve for x
    x = 56,038,958.41/7,837.90
  6. Step 6: Final answer
    x = 7,149.74

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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.