Home / 3,246.71-4,479.74-1,987.67

Finding the Fourth Proportional to 3,246.71, 4,479.74 and 1,987.67

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Solution

The fourth proportional to 3,246.71, 4,479.74 and 1,987.67 is: 2,742.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,246.71 : 4,479.74 = 1,987.67 : x
  2. Step 2: Convert to fraction form
    3,246.71/4,479.74 = 1,987.67/x
  3. Step 3: Cross multiply
    3,246.71x = 4,479.74 × 1,987.67
  4. Step 4: Simplify right side
    3,246.71x = 8,904,212.47
  5. Step 5: Solve for x
    x = 8,904,212.47/3,246.71
  6. Step 6: Final answer
    x = 2,742.53

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.