Home / 4,209.06-6,312.24-1,987.68

Finding the Fourth Proportional to 4,209.06, 6,312.24 and 1,987.68

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Solution

The fourth proportional to 4,209.06, 6,312.24 and 1,987.68 is: 2,980.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,209.06 : 6,312.24 = 1,987.68 : x
  2. Step 2: Convert to fraction form
    4,209.06/6,312.24 = 1,987.68/x
  3. Step 3: Cross multiply
    4,209.06x = 6,312.24 × 1,987.68
  4. Step 4: Simplify right side
    4,209.06x = 12,546,713.20
  5. Step 5: Solve for x
    x = 12,546,713.20/4,209.06
  6. Step 6: Final answer
    x = 2,980.88

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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.