Home / 4,977.21-6,868.89-2,881.35

Finding the Fourth Proportional to 4,977.21, 6,868.89 and 2,881.35

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Solution

The fourth proportional to 4,977.21, 6,868.89 and 2,881.35 is: 3,976.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,977.21 : 6,868.89 = 2,881.35 : x
  2. Step 2: Convert to fraction form
    4,977.21/6,868.89 = 2,881.35/x
  3. Step 3: Cross multiply
    4,977.21x = 6,868.89 × 2,881.35
  4. Step 4: Simplify right side
    4,977.21x = 19,791,676.20
  5. Step 5: Solve for x
    x = 19,791,676.20/4,977.21
  6. Step 6: Final answer
    x = 3,976.46

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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.