Home / 5,715.42-7,885.53-3,725.25

Finding the Fourth Proportional to 5,715.42, 7,885.53 and 3,725.25

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Solution

The fourth proportional to 5,715.42, 7,885.53 and 3,725.25 is: 5,139.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,715.42 : 7,885.53 = 3,725.25 : x
  2. Step 2: Convert to fraction form
    5,715.42/7,885.53 = 3,725.25/x
  3. Step 3: Cross multiply
    5,715.42x = 7,885.53 × 3,725.25
  4. Step 4: Simplify right side
    5,715.42x = 29,375,570.63
  5. Step 5: Solve for x
    x = 29,375,570.63/5,715.42
  6. Step 6: Final answer
    x = 5,139.70

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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.