Home / 5,100.80-7,038.90-2,863.16

Finding the Fourth Proportional to 5,100.80, 7,038.90 and 2,863.16

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Solution

The fourth proportional to 5,100.80, 7,038.90 and 2,863.16 is: 3,951.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,100.80 : 7,038.90 = 2,863.16 : x
  2. Step 2: Convert to fraction form
    5,100.80/7,038.90 = 2,863.16/x
  3. Step 3: Cross multiply
    5,100.80x = 7,038.90 × 2,863.16
  4. Step 4: Simplify right side
    5,100.80x = 20,153,496.92
  5. Step 5: Solve for x
    x = 20,153,496.92/5,100.80
  6. Step 6: Final answer
    x = 3,951.05

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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.