Home / 2,870.71-3,960.36-1,751.49

Finding the Fourth Proportional to 2,870.71, 3,960.36 and 1,751.49

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Solution

The fourth proportional to 2,870.71, 3,960.36 and 1,751.49 is: 2,416.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,870.71 : 3,960.36 = 1,751.49 : x
  2. Step 2: Convert to fraction form
    2,870.71/3,960.36 = 1,751.49/x
  3. Step 3: Cross multiply
    2,870.71x = 3,960.36 × 1,751.49
  4. Step 4: Simplify right side
    2,870.71x = 6,936,530.94
  5. Step 5: Solve for x
    x = 6,936,530.94/2,870.71
  6. Step 6: Final answer
    x = 2,416.31

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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.