Home / 5,125.12-7,688.64-2,947.84

Finding the Fourth Proportional to 5,125.12, 7,688.64 and 2,947.84

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Solution

The fourth proportional to 5,125.12, 7,688.64 and 2,947.84 is: 4,422.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,125.12 : 7,688.64 = 2,947.84 : x
  2. Step 2: Convert to fraction form
    5,125.12/7,688.64 = 2,947.84/x
  3. Step 3: Cross multiply
    5,125.12x = 7,688.64 × 2,947.84
  4. Step 4: Simplify right side
    5,125.12x = 22,664,880.54
  5. Step 5: Solve for x
    x = 22,664,880.54/5,125.12
  6. Step 6: Final answer
    x = 4,422.31

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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.