Home / 4,762.85-7,145.40-1,987.98

Finding the Fourth Proportional to 4,762.85, 7,145.40 and 1,987.98

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Solution

The fourth proportional to 4,762.85, 7,145.40 and 1,987.98 is: 2,982.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,762.85 : 7,145.40 = 1,987.98 : x
  2. Step 2: Convert to fraction form
    4,762.85/7,145.40 = 1,987.98/x
  3. Step 3: Cross multiply
    4,762.85x = 7,145.40 × 1,987.98
  4. Step 4: Simplify right side
    4,762.85x = 14,204,912.29
  5. Step 5: Solve for x
    x = 14,204,912.29/4,762.85
  6. Step 6: Final answer
    x = 2,982.44

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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.