Home / 7,149.10-10,723.58-2,931.42

Finding the Fourth Proportional to 7,149.10, 10,723.58 and 2,931.42

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Solution

The fourth proportional to 7,149.10, 10,723.58 and 2,931.42 is: 4,397.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,149.10 : 10,723.58 = 2,931.42 : x
  2. Step 2: Convert to fraction form
    7,149.10/10,723.58 = 2,931.42/x
  3. Step 3: Cross multiply
    7,149.10x = 10,723.58 × 2,931.42
  4. Step 4: Simplify right side
    7,149.10x = 31,435,316.88
  5. Step 5: Solve for x
    x = 31,435,316.88/7,149.10
  6. Step 6: Final answer
    x = 4,397.10

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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.