Home / 1,909.46-2,626.80-1,684.28

Finding the Fourth Proportional to 1,909.46, 2,626.80 and 1,684.28

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Solution

The fourth proportional to 1,909.46, 2,626.80 and 1,684.28 is: 2,317.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,909.46 : 2,626.80 = 1,684.28 : x
  2. Step 2: Convert to fraction form
    1,909.46/2,626.80 = 1,684.28/x
  3. Step 3: Cross multiply
    1,909.46x = 2,626.80 × 1,684.28
  4. Step 4: Simplify right side
    1,909.46x = 4,424,266.70
  5. Step 5: Solve for x
    x = 4,424,266.70/1,909.46
  6. Step 6: Final answer
    x = 2,317.03

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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.