Home / 5,319.91-7,341.75-3,081.40

Finding the Fourth Proportional to 5,319.91, 7,341.75 and 3,081.40

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Solution

The fourth proportional to 5,319.91, 7,341.75 and 3,081.40 is: 4,252.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,319.91 : 7,341.75 = 3,081.40 : x
  2. Step 2: Convert to fraction form
    5,319.91/7,341.75 = 3,081.40/x
  3. Step 3: Cross multiply
    5,319.91x = 7,341.75 × 3,081.40
  4. Step 4: Simplify right side
    5,319.91x = 22,622,868.45
  5. Step 5: Solve for x
    x = 22,622,868.45/5,319.91
  6. Step 6: Final answer
    x = 4,252.49

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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.