Home / 4,986.80-6,880.98-2,890.52

Finding the Fourth Proportional to 4,986.80, 6,880.98 and 2,890.52

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Solution

The fourth proportional to 4,986.80, 6,880.98 and 2,890.52 is: 3,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.80 : 6,880.98 = 2,890.52 : x
  2. Step 2: Convert to fraction form
    4,986.80/6,880.98 = 2,890.52/x
  3. Step 3: Cross multiply
    4,986.80x = 6,880.98 × 2,890.52
  4. Step 4: Simplify right side
    4,986.80x = 19,889,610.31
  5. Step 5: Solve for x
    x = 19,889,610.31/4,986.80
  6. Step 6: Final answer
    x = 3,988.45

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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.