Home / 5,015.98-6,921-3,820.72

Finding the Fourth Proportional to 5,015.98, 6,921 and 3,820.72

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Solution

The fourth proportional to 5,015.98, 6,921 and 3,820.72 is: 5,271.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,015.98 : 6,921 = 3,820.72 : x
  2. Step 2: Convert to fraction form
    5,015.98/6,921 = 3,820.72/x
  3. Step 3: Cross multiply
    5,015.98x = 6,921 × 3,820.72
  4. Step 4: Simplify right side
    5,015.98x = 26,443,203.12
  5. Step 5: Solve for x
    x = 26,443,203.12/5,015.98
  6. Step 6: Final answer
    x = 5,271.79

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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.