Home / 7,145.50-9,860.79-4,001.69

Finding the Fourth Proportional to 7,145.50, 9,860.79 and 4,001.69

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Solution

The fourth proportional to 7,145.50, 9,860.79 and 4,001.69 is: 5,522.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.50 : 9,860.79 = 4,001.69 : x
  2. Step 2: Convert to fraction form
    7,145.50/9,860.79 = 4,001.69/x
  3. Step 3: Cross multiply
    7,145.50x = 9,860.79 × 4,001.69
  4. Step 4: Simplify right side
    7,145.50x = 39,459,810.09
  5. Step 5: Solve for x
    x = 39,459,810.09/7,145.50
  6. Step 6: Final answer
    x = 5,522.33

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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.