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Finding the Fourth Proportional to 3,538.59, 5,307.21 and 1,347.54

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Solution

The fourth proportional to 3,538.59, 5,307.21 and 1,347.54 is: 2,021.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,538.59 : 5,307.21 = 1,347.54 : x
  2. Step 2: Convert to fraction form
    3,538.59/5,307.21 = 1,347.54/x
  3. Step 3: Cross multiply
    3,538.59x = 5,307.21 × 1,347.54
  4. Step 4: Simplify right side
    3,538.59x = 7,151,677.76
  5. Step 5: Solve for x
    x = 7,151,677.76/3,538.59
  6. Step 6: Final answer
    x = 2,021.05

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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.