Home / 5,380.83-7,409.48-4,988.79

Finding the Fourth Proportional to 5,380.83, 7,409.48 and 4,988.79

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Solution

The fourth proportional to 5,380.83, 7,409.48 and 4,988.79 is: 6,869.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,380.83 : 7,409.48 = 4,988.79 : x
  2. Step 2: Convert to fraction form
    5,380.83/7,409.48 = 4,988.79/x
  3. Step 3: Cross multiply
    5,380.83x = 7,409.48 × 4,988.79
  4. Step 4: Simplify right side
    5,380.83x = 36,964,314.79
  5. Step 5: Solve for x
    x = 36,964,314.79/5,380.83
  6. Step 6: Final answer
    x = 6,869.63

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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.