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Finding the Fourth Proportional to 2,891.80, 4,340.90 and 2,703.80

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Solution

The fourth proportional to 2,891.80, 4,340.90 and 2,703.80 is: 4,058.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,891.80 : 4,340.90 = 2,703.80 : x
  2. Step 2: Convert to fraction form
    2,891.80/4,340.90 = 2,703.80/x
  3. Step 3: Cross multiply
    2,891.80x = 4,340.90 × 2,703.80
  4. Step 4: Simplify right side
    2,891.80x = 11,736,925.42
  5. Step 5: Solve for x
    x = 11,736,925.42/2,891.80
  6. Step 6: Final answer
    x = 4,058.69

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.