Home / 5,319.36-7,340.40-2,961.65

Finding the Fourth Proportional to 5,319.36, 7,340.40 and 2,961.65

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Solution

The fourth proportional to 5,319.36, 7,340.40 and 2,961.65 is: 4,086.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.36 : 7,340.40 = 2,961.65 : x
  2. Step 2: Convert to fraction form
    5,319.36/7,340.40 = 2,961.65/x
  3. Step 3: Cross multiply
    5,319.36x = 7,340.40 × 2,961.65
  4. Step 4: Simplify right side
    5,319.36x = 21,739,658.96
  5. Step 5: Solve for x
    x = 21,739,658.96/5,319.36
  6. Step 6: Final answer
    x = 4,086.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.