Home / 7,145.55-9,860.85-4,001.76

Finding the Fourth Proportional to 7,145.55, 9,860.85 and 4,001.76

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Solution

The fourth proportional to 7,145.55, 9,860.85 and 4,001.76 is: 5,522.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.55 : 9,860.85 = 4,001.76 : x
  2. Step 2: Convert to fraction form
    7,145.55/9,860.85 = 4,001.76/x
  3. Step 3: Cross multiply
    7,145.55x = 9,860.85 × 4,001.76
  4. Step 4: Simplify right side
    7,145.55x = 39,460,755.10
  5. Step 5: Solve for x
    x = 39,460,755.10/7,145.55
  6. Step 6: Final answer
    x = 5,522.42

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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.