Home / 7,138.12-10,706.10-2,457.40

Finding the Fourth Proportional to 7,138.12, 10,706.10 and 2,457.40

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Solution

The fourth proportional to 7,138.12, 10,706.10 and 2,457.40 is: 3,685.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,138.12 : 10,706.10 = 2,457.40 : x
  2. Step 2: Convert to fraction form
    7,138.12/10,706.10 = 2,457.40/x
  3. Step 3: Cross multiply
    7,138.12x = 10,706.10 × 2,457.40
  4. Step 4: Simplify right side
    7,138.12x = 26,309,170.14
  5. Step 5: Solve for x
    x = 26,309,170.14/7,138.12
  6. Step 6: Final answer
    x = 3,685.73

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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.