Home / 9,316.68-12,857.08-5,125.20

Finding the Fourth Proportional to 9,316.68, 12,857.08 and 5,125.20

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Solution

The fourth proportional to 9,316.68, 12,857.08 and 5,125.20 is: 7,072.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,316.68 : 12,857.08 = 5,125.20 : x
  2. Step 2: Convert to fraction form
    9,316.68/12,857.08 = 5,125.20/x
  3. Step 3: Cross multiply
    9,316.68x = 12,857.08 × 5,125.20
  4. Step 4: Simplify right side
    9,316.68x = 65,895,106.42
  5. Step 5: Solve for x
    x = 65,895,106.42/9,316.68
  6. Step 6: Final answer
    x = 7,072.81

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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.