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Finding the Fourth Proportional to 3,554.90, 5,330.90 and 1,245.86

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Solution

The fourth proportional to 3,554.90, 5,330.90 and 1,245.86 is: 1,868.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,554.90 : 5,330.90 = 1,245.86 : x
  2. Step 2: Convert to fraction form
    3,554.90/5,330.90 = 1,245.86/x
  3. Step 3: Cross multiply
    3,554.90x = 5,330.90 × 1,245.86
  4. Step 4: Simplify right side
    3,554.90x = 6,641,555.07
  5. Step 5: Solve for x
    x = 6,641,555.07/3,554.90
  6. Step 6: Final answer
    x = 1,868.28

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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.