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Finding the Fourth Proportional to 2,909.95, 4,017.10 and 1,862.62

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Solution

The fourth proportional to 2,909.95, 4,017.10 and 1,862.62 is: 2,571.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,909.95 : 4,017.10 = 1,862.62 : x
  2. Step 2: Convert to fraction form
    2,909.95/4,017.10 = 1,862.62/x
  3. Step 3: Cross multiply
    2,909.95x = 4,017.10 × 1,862.62
  4. Step 4: Simplify right side
    2,909.95x = 7,482,310.72
  5. Step 5: Solve for x
    x = 7,482,310.72/2,909.95
  6. Step 6: Final answer
    x = 2,571.29

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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.