Home / 3,317.90-4,973.91-2,148.80

Finding the Fourth Proportional to 3,317.90, 4,973.91 and 2,148.80

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Solution

The fourth proportional to 3,317.90, 4,973.91 and 2,148.80 is: 3,221.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,317.90 : 4,973.91 = 2,148.80 : x
  2. Step 2: Convert to fraction form
    3,317.90/4,973.91 = 2,148.80/x
  3. Step 3: Cross multiply
    3,317.90x = 4,973.91 × 2,148.80
  4. Step 4: Simplify right side
    3,317.90x = 10,687,937.81
  5. Step 5: Solve for x
    x = 10,687,937.81/3,317.90
  6. Step 6: Final answer
    x = 3,221.30

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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.