Home / 2,950.81-4,421.35-2,172.40

Finding the Fourth Proportional to 2,950.81, 4,421.35 and 2,172.40

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Solution

The fourth proportional to 2,950.81, 4,421.35 and 2,172.40 is: 3,255.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,950.81 : 4,421.35 = 2,172.40 : x
  2. Step 2: Convert to fraction form
    2,950.81/4,421.35 = 2,172.40/x
  3. Step 3: Cross multiply
    2,950.81x = 4,421.35 × 2,172.40
  4. Step 4: Simplify right side
    2,950.81x = 9,604,940.74
  5. Step 5: Solve for x
    x = 9,604,940.74/2,950.81
  6. Step 6: Final answer
    x = 3,255.02

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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.