Home / 4,987.90-6,880.96-3,098.88

Finding the Fourth Proportional to 4,987.90, 6,880.96 and 3,098.88

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Solution

The fourth proportional to 4,987.90, 6,880.96 and 3,098.88 is: 4,275.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.90 : 6,880.96 = 3,098.88 : x
  2. Step 2: Convert to fraction form
    4,987.90/6,880.96 = 3,098.88/x
  3. Step 3: Cross multiply
    4,987.90x = 6,880.96 × 3,098.88
  4. Step 4: Simplify right side
    4,987.90x = 21,323,273.20
  5. Step 5: Solve for x
    x = 21,323,273.20/4,987.90
  6. Step 6: Final answer
    x = 4,275.00

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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.