Home / 3,156.42-4,734.89-1,307.19

Finding the Fourth Proportional to 3,156.42, 4,734.89 and 1,307.19

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Solution

The fourth proportional to 3,156.42, 4,734.89 and 1,307.19 is: 1,960.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,156.42 : 4,734.89 = 1,307.19 : x
  2. Step 2: Convert to fraction form
    3,156.42/4,734.89 = 1,307.19/x
  3. Step 3: Cross multiply
    3,156.42x = 4,734.89 × 1,307.19
  4. Step 4: Simplify right side
    3,156.42x = 6,189,394.32
  5. Step 5: Solve for x
    x = 6,189,394.32/3,156.42
  6. Step 6: Final answer
    x = 1,960.89

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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.