Home / 5,181.77-7,816.13-4,878.62

Finding the Fourth Proportional to 5,181.77, 7,816.13 and 4,878.62

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Solution

The fourth proportional to 5,181.77, 7,816.13 and 4,878.62 is: 7,358.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,181.77 : 7,816.13 = 4,878.62 : x
  2. Step 2: Convert to fraction form
    5,181.77/7,816.13 = 4,878.62/x
  3. Step 3: Cross multiply
    5,181.77x = 7,816.13 × 4,878.62
  4. Step 4: Simplify right side
    5,181.77x = 38,131,864.67
  5. Step 5: Solve for x
    x = 38,131,864.67/5,181.77
  6. Step 6: Final answer
    x = 7,358.86

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.