Home / 5,131.35-7,688.81-4,639.28

Finding the Fourth Proportional to 5,131.35, 7,688.81 and 4,639.28

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Solution

The fourth proportional to 5,131.35, 7,688.81 and 4,639.28 is: 6,951.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,131.35 : 7,688.81 = 4,639.28 : x
  2. Step 2: Convert to fraction form
    5,131.35/7,688.81 = 4,639.28/x
  3. Step 3: Cross multiply
    5,131.35x = 7,688.81 × 4,639.28
  4. Step 4: Simplify right side
    5,131.35x = 35,670,515.61
  5. Step 5: Solve for x
    x = 35,670,515.61/5,131.35
  6. Step 6: Final answer
    x = 6,951.49

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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.