Home / 5,015.66-6,921.56-2,890.41

Finding the Fourth Proportional to 5,015.66, 6,921.56 and 2,890.41

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Solution

The fourth proportional to 5,015.66, 6,921.56 and 2,890.41 is: 3,988.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.66 : 6,921.56 = 2,890.41 : x
  2. Step 2: Convert to fraction form
    5,015.66/6,921.56 = 2,890.41/x
  3. Step 3: Cross multiply
    5,015.66x = 6,921.56 × 2,890.41
  4. Step 4: Simplify right side
    5,015.66x = 20,006,153.47
  5. Step 5: Solve for x
    x = 20,006,153.47/5,015.66
  6. Step 6: Final answer
    x = 3,988.74

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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.