Home / 4,986.60-6,888.84-3,870.36

Finding the Fourth Proportional to 4,986.60, 6,888.84 and 3,870.36

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Solution

The fourth proportional to 4,986.60, 6,888.84 and 3,870.36 is: 5,346.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.60 : 6,888.84 = 3,870.36 : x
  2. Step 2: Convert to fraction form
    4,986.60/6,888.84 = 3,870.36/x
  3. Step 3: Cross multiply
    4,986.60x = 6,888.84 × 3,870.36
  4. Step 4: Simplify right side
    4,986.60x = 26,662,290.78
  5. Step 5: Solve for x
    x = 26,662,290.78/4,986.60
  6. Step 6: Final answer
    x = 5,346.79

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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.