Home / 4,985.89-6,880.59-2,861.59

Finding the Fourth Proportional to 4,985.89, 6,880.59 and 2,861.59

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Solution

The fourth proportional to 4,985.89, 6,880.59 and 2,861.59 is: 3,949.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.89 : 6,880.59 = 2,861.59 : x
  2. Step 2: Convert to fraction form
    4,985.89/6,880.59 = 2,861.59/x
  3. Step 3: Cross multiply
    4,985.89x = 6,880.59 × 2,861.59
  4. Step 4: Simplify right side
    4,985.89x = 19,689,393.14
  5. Step 5: Solve for x
    x = 19,689,393.14/4,985.89
  6. Step 6: Final answer
    x = 3,949.03

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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.