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Finding the Fourth Proportional to 3,504.61, 5,256.71 and 1,313.15

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Solution

The fourth proportional to 3,504.61, 5,256.71 and 1,313.15 is: 1,969.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,504.61 : 5,256.71 = 1,313.15 : x
  2. Step 2: Convert to fraction form
    3,504.61/5,256.71 = 1,313.15/x
  3. Step 3: Cross multiply
    3,504.61x = 5,256.71 × 1,313.15
  4. Step 4: Simplify right side
    3,504.61x = 6,902,855.31
  5. Step 5: Solve for x
    x = 6,902,855.31/3,504.61
  6. Step 6: Final answer
    x = 1,969.65

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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.