Home / 4,986.65-6,880.48-2,889.56

Finding the Fourth Proportional to 4,986.65, 6,880.48 and 2,889.56

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Solution

The fourth proportional to 4,986.65, 6,880.48 and 2,889.56 is: 3,986.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.65 : 6,880.48 = 2,889.56 : x
  2. Step 2: Convert to fraction form
    4,986.65/6,880.48 = 2,889.56/x
  3. Step 3: Cross multiply
    4,986.65x = 6,880.48 × 2,889.56
  4. Step 4: Simplify right side
    4,986.65x = 19,881,569.77
  5. Step 5: Solve for x
    x = 19,881,569.77/4,986.65
  6. Step 6: Final answer
    x = 3,986.96

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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.