Home / 2,987.52-4,481.30-1,686.25

Finding the Fourth Proportional to 2,987.52, 4,481.30 and 1,686.25

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Solution

The fourth proportional to 2,987.52, 4,481.30 and 1,686.25 is: 2,529.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,987.52 : 4,481.30 = 1,686.25 : x
  2. Step 2: Convert to fraction form
    2,987.52/4,481.30 = 1,686.25/x
  3. Step 3: Cross multiply
    2,987.52x = 4,481.30 × 1,686.25
  4. Step 4: Simplify right side
    2,987.52x = 7,556,592.13
  5. Step 5: Solve for x
    x = 7,556,592.13/2,987.52
  6. Step 6: Final answer
    x = 2,529.39

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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.