Home / 4,987.89-6,881.36-2,862.65

Finding the Fourth Proportional to 4,987.89, 6,881.36 and 2,862.65

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Solution

The fourth proportional to 4,987.89, 6,881.36 and 2,862.65 is: 3,949.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,987.89 : 6,881.36 = 2,862.65 : x
  2. Step 2: Convert to fraction form
    4,987.89/6,881.36 = 2,862.65/x
  3. Step 3: Cross multiply
    4,987.89x = 6,881.36 × 2,862.65
  4. Step 4: Simplify right side
    4,987.89x = 19,698,928.09
  5. Step 5: Solve for x
    x = 19,698,928.09/4,987.89
  6. Step 6: Final answer
    x = 3,949.35

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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.