Home / 4,999.72-6,900.20-3,011.28

Finding the Fourth Proportional to 4,999.72, 6,900.20 and 3,011.28

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Solution

The fourth proportional to 4,999.72, 6,900.20 and 3,011.28 is: 4,155.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,999.72 : 6,900.20 = 3,011.28 : x
  2. Step 2: Convert to fraction form
    4,999.72/6,900.20 = 3,011.28/x
  3. Step 3: Cross multiply
    4,999.72x = 6,900.20 × 3,011.28
  4. Step 4: Simplify right side
    4,999.72x = 20,778,434.26
  5. Step 5: Solve for x
    x = 20,778,434.26/4,999.72
  6. Step 6: Final answer
    x = 4,155.92

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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.