Home / 5,015.32-6,921.30-2,890.68

Finding the Fourth Proportional to 5,015.32, 6,921.30 and 2,890.68

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Solution

The fourth proportional to 5,015.32, 6,921.30 and 2,890.68 is: 3,989.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.32 : 6,921.30 = 2,890.68 : x
  2. Step 2: Convert to fraction form
    5,015.32/6,921.30 = 2,890.68/x
  3. Step 3: Cross multiply
    5,015.32x = 6,921.30 × 2,890.68
  4. Step 4: Simplify right side
    5,015.32x = 20,007,263.48
  5. Step 5: Solve for x
    x = 20,007,263.48/5,015.32
  6. Step 6: Final answer
    x = 3,989.23

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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.