Home / 3,880.98-5,357.88-2,810.70

Finding the Fourth Proportional to 3,880.98, 5,357.88 and 2,810.70

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Solution

The fourth proportional to 3,880.98, 5,357.88 and 2,810.70 is: 3,880.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,880.98 : 5,357.88 = 2,810.70 : x
  2. Step 2: Convert to fraction form
    3,880.98/5,357.88 = 2,810.70/x
  3. Step 3: Cross multiply
    3,880.98x = 5,357.88 × 2,810.70
  4. Step 4: Simplify right side
    3,880.98x = 15,059,393.32
  5. Step 5: Solve for x
    x = 15,059,393.32/3,880.98
  6. Step 6: Final answer
    x = 3,880.31

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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.