Home / 4,985.30-6,878.91-2,889.02

Finding the Fourth Proportional to 4,985.30, 6,878.91 and 2,889.02

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Solution

The fourth proportional to 4,985.30, 6,878.91 and 2,889.02 is: 3,986.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.30 : 6,878.91 = 2,889.02 : x
  2. Step 2: Convert to fraction form
    4,985.30/6,878.91 = 2,889.02/x
  3. Step 3: Cross multiply
    4,985.30x = 6,878.91 × 2,889.02
  4. Step 4: Simplify right side
    4,985.30x = 19,873,308.57
  5. Step 5: Solve for x
    x = 19,873,308.57/4,985.30
  6. Step 6: Final answer
    x = 3,986.38

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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.