Home / 1,951.29-2,690.24-1,420.26

Finding the Fourth Proportional to 1,951.29, 2,690.24 and 1,420.26

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Solution

The fourth proportional to 1,951.29, 2,690.24 and 1,420.26 is: 1,958.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,951.29 : 2,690.24 = 1,420.26 : x
  2. Step 2: Convert to fraction form
    1,951.29/2,690.24 = 1,420.26/x
  3. Step 3: Cross multiply
    1,951.29x = 2,690.24 × 1,420.26
  4. Step 4: Simplify right side
    1,951.29x = 3,820,834.63
  5. Step 5: Solve for x
    x = 3,820,834.63/1,951.29
  6. Step 6: Final answer
    x = 1,958.11

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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.