Home / 5,208.66-7,188.15-2,970.90

Finding the Fourth Proportional to 5,208.66, 7,188.15 and 2,970.90

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Solution

The fourth proportional to 5,208.66, 7,188.15 and 2,970.90 is: 4,099.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,208.66 : 7,188.15 = 2,970.90 : x
  2. Step 2: Convert to fraction form
    5,208.66/7,188.15 = 2,970.90/x
  3. Step 3: Cross multiply
    5,208.66x = 7,188.15 × 2,970.90
  4. Step 4: Simplify right side
    5,208.66x = 21,355,274.84
  5. Step 5: Solve for x
    x = 21,355,274.84/5,208.66
  6. Step 6: Final answer
    x = 4,099.96

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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.