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Finding the Fourth Proportional to 2,221.85, 3,332.74 and 904.65

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Solution

The fourth proportional to 2,221.85, 3,332.74 and 904.65 is: 1,356.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,221.85 : 3,332.74 = 904.65 : x
  2. Step 2: Convert to fraction form
    2,221.85/3,332.74 = 904.65/x
  3. Step 3: Cross multiply
    2,221.85x = 3,332.74 × 904.65
  4. Step 4: Simplify right side
    2,221.85x = 3,014,963.24
  5. Step 5: Solve for x
    x = 3,014,963.24/2,221.85
  6. Step 6: Final answer
    x = 1,356.96

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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.