Home / 7,116.72-10,680.33-3,421.08

Finding the Fourth Proportional to 7,116.72, 10,680.33 and 3,421.08

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Solution

The fourth proportional to 7,116.72, 10,680.33 and 3,421.08 is: 5,134.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,116.72 : 10,680.33 = 3,421.08 : x
  2. Step 2: Convert to fraction form
    7,116.72/10,680.33 = 3,421.08/x
  3. Step 3: Cross multiply
    7,116.72x = 10,680.33 × 3,421.08
  4. Step 4: Simplify right side
    7,116.72x = 36,538,263.36
  5. Step 5: Solve for x
    x = 36,538,263.36/7,116.72
  6. Step 6: Final answer
    x = 5,134.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.