Home / 7,145.35-9,860.90-4,001.47

Finding the Fourth Proportional to 7,145.35, 9,860.90 and 4,001.47

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Solution

The fourth proportional to 7,145.35, 9,860.90 and 4,001.47 is: 5,522.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.35 : 9,860.90 = 4,001.47 : x
  2. Step 2: Convert to fraction form
    7,145.35/9,860.90 = 4,001.47/x
  3. Step 3: Cross multiply
    7,145.35x = 9,860.90 × 4,001.47
  4. Step 4: Simplify right side
    7,145.35x = 39,458,095.52
  5. Step 5: Solve for x
    x = 39,458,095.52/7,145.35
  6. Step 6: Final answer
    x = 5,522.21

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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.