Home / 3,987.23-5,980.84-1,065.56

Finding the Fourth Proportional to 3,987.23, 5,980.84 and 1,065.56

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Solution

The fourth proportional to 3,987.23, 5,980.84 and 1,065.56 is: 1,598.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,987.23 : 5,980.84 = 1,065.56 : x
  2. Step 2: Convert to fraction form
    3,987.23/5,980.84 = 1,065.56/x
  3. Step 3: Cross multiply
    3,987.23x = 5,980.84 × 1,065.56
  4. Step 4: Simplify right side
    3,987.23x = 6,372,911.30
  5. Step 5: Solve for x
    x = 6,372,911.30/3,987.23
  6. Step 6: Final answer
    x = 1,598.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.