Home / 2,635.28-3,635.08-1,690.75

Finding the Fourth Proportional to 2,635.28, 3,635.08 and 1,690.75

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Solution

The fourth proportional to 2,635.28, 3,635.08 and 1,690.75 is: 2,332.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,635.28 : 3,635.08 = 1,690.75 : x
  2. Step 2: Convert to fraction form
    2,635.28/3,635.08 = 1,690.75/x
  3. Step 3: Cross multiply
    2,635.28x = 3,635.08 × 1,690.75
  4. Step 4: Simplify right side
    2,635.28x = 6,146,011.83
  5. Step 5: Solve for x
    x = 6,146,011.83/2,635.28
  6. Step 6: Final answer
    x = 2,332.21

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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.