Home / 4,987.55-7,481.27-1,909.55

Finding the Fourth Proportional to 4,987.55, 7,481.27 and 1,909.55

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Solution

The fourth proportional to 4,987.55, 7,481.27 and 1,909.55 is: 2,864.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.55 : 7,481.27 = 1,909.55 : x
  2. Step 2: Convert to fraction form
    4,987.55/7,481.27 = 1,909.55/x
  3. Step 3: Cross multiply
    4,987.55x = 7,481.27 × 1,909.55
  4. Step 4: Simplify right side
    4,987.55x = 14,285,826.50
  5. Step 5: Solve for x
    x = 14,285,826.50/4,987.55
  6. Step 6: Final answer
    x = 2,864.30

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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.