Home / 4,986.68-6,881.40-2,860.74

Finding the Fourth Proportional to 4,986.68, 6,881.40 and 2,860.74

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Solution

The fourth proportional to 4,986.68, 6,881.40 and 2,860.74 is: 3,947.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,986.68 : 6,881.40 = 2,860.74 : x
  2. Step 2: Convert to fraction form
    4,986.68/6,881.40 = 2,860.74/x
  3. Step 3: Cross multiply
    4,986.68x = 6,881.40 × 2,860.74
  4. Step 4: Simplify right side
    4,986.68x = 19,685,896.24
  5. Step 5: Solve for x
    x = 19,685,896.24/4,986.68
  6. Step 6: Final answer
    x = 3,947.70

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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.