Home / 2,290.76-3,158.88-1,960.28

Finding the Fourth Proportional to 2,290.76, 3,158.88 and 1,960.28

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Solution

The fourth proportional to 2,290.76, 3,158.88 and 1,960.28 is: 2,703.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,290.76 : 3,158.88 = 1,960.28 : x
  2. Step 2: Convert to fraction form
    2,290.76/3,158.88 = 1,960.28/x
  3. Step 3: Cross multiply
    2,290.76x = 3,158.88 × 1,960.28
  4. Step 4: Simplify right side
    2,290.76x = 6,192,289.29
  5. Step 5: Solve for x
    x = 6,192,289.29/2,290.76
  6. Step 6: Final answer
    x = 2,703.16

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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.