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Finding the Fourth Proportional to 2,891.80, 4,312.85 and 2,746.91

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Solution

The fourth proportional to 2,891.80, 4,312.85 and 2,746.91 is: 4,096.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.80 : 4,312.85 = 2,746.91 : x
  2. Step 2: Convert to fraction form
    2,891.80/4,312.85 = 2,746.91/x
  3. Step 3: Cross multiply
    2,891.80x = 4,312.85 × 2,746.91
  4. Step 4: Simplify right side
    2,891.80x = 11,847,007.84
  5. Step 5: Solve for x
    x = 11,847,007.84/2,891.80
  6. Step 6: Final answer
    x = 4,096.76

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.