Home / 6,514.84-8,990.58-3,720.34

Finding the Fourth Proportional to 6,514.84, 8,990.58 and 3,720.34

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Solution

The fourth proportional to 6,514.84, 8,990.58 and 3,720.34 is: 5,134.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,514.84 : 8,990.58 = 3,720.34 : x
  2. Step 2: Convert to fraction form
    6,514.84/8,990.58 = 3,720.34/x
  3. Step 3: Cross multiply
    6,514.84x = 8,990.58 × 3,720.34
  4. Step 4: Simplify right side
    6,514.84x = 33,448,014.40
  5. Step 5: Solve for x
    x = 33,448,014.40/6,514.84
  6. Step 6: Final answer
    x = 5,134.13

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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.