Home / 4,985.82-6,880.14-2,860.86

Finding the Fourth Proportional to 4,985.82, 6,880.14 and 2,860.86

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Solution

The fourth proportional to 4,985.82, 6,880.14 and 2,860.86 is: 3,947.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.82 : 6,880.14 = 2,860.86 : x
  2. Step 2: Convert to fraction form
    4,985.82/6,880.14 = 2,860.86/x
  3. Step 3: Cross multiply
    4,985.82x = 6,880.14 × 2,860.86
  4. Step 4: Simplify right side
    4,985.82x = 19,683,117.32
  5. Step 5: Solve for x
    x = 19,683,117.32/4,985.82
  6. Step 6: Final answer
    x = 3,947.82

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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.