Home / 5,228.16-7,212.57-3,131.07

Finding the Fourth Proportional to 5,228.16, 7,212.57 and 3,131.07

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Solution

The fourth proportional to 5,228.16, 7,212.57 and 3,131.07 is: 4,319.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,228.16 : 7,212.57 = 3,131.07 : x
  2. Step 2: Convert to fraction form
    5,228.16/7,212.57 = 3,131.07/x
  3. Step 3: Cross multiply
    5,228.16x = 7,212.57 × 3,131.07
  4. Step 4: Simplify right side
    5,228.16x = 22,583,061.55
  5. Step 5: Solve for x
    x = 22,583,061.55/5,228.16
  6. Step 6: Final answer
    x = 4,319.50

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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.