Home / 7,145.25-9,860.45-4,001.44

Finding the Fourth Proportional to 7,145.25, 9,860.45 and 4,001.44

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Solution

The fourth proportional to 7,145.25, 9,860.45 and 4,001.44 is: 5,521.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145.25 : 9,860.45 = 4,001.44 : x
  2. Step 2: Convert to fraction form
    7,145.25/9,860.45 = 4,001.44/x
  3. Step 3: Cross multiply
    7,145.25x = 9,860.45 × 4,001.44
  4. Step 4: Simplify right side
    7,145.25x = 39,455,964.64
  5. Step 5: Solve for x
    x = 39,455,964.64/7,145.25
  6. Step 6: Final answer
    x = 5,521.98

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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.