Home / 6,820.14-9,411.92-3,987.76

Finding the Fourth Proportional to 6,820.14, 9,411.92 and 3,987.76

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Solution

The fourth proportional to 6,820.14, 9,411.92 and 3,987.76 is: 5,503.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,820.14 : 9,411.92 = 3,987.76 : x
  2. Step 2: Convert to fraction form
    6,820.14/9,411.92 = 3,987.76/x
  3. Step 3: Cross multiply
    6,820.14x = 9,411.92 × 3,987.76
  4. Step 4: Simplify right side
    6,820.14x = 37,532,478.10
  5. Step 5: Solve for x
    x = 37,532,478.10/6,820.14
  6. Step 6: Final answer
    x = 5,503.18

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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.