Home / 1,478.71-2,226.26-1,306.36

Finding the Fourth Proportional to 1,478.71, 2,226.26 and 1,306.36

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Solution

The fourth proportional to 1,478.71, 2,226.26 and 1,306.36 is: 1,966.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,478.71 : 2,226.26 = 1,306.36 : x
  2. Step 2: Convert to fraction form
    1,478.71/2,226.26 = 1,306.36/x
  3. Step 3: Cross multiply
    1,478.71x = 2,226.26 × 1,306.36
  4. Step 4: Simplify right side
    1,478.71x = 2,908,297.01
  5. Step 5: Solve for x
    x = 2,908,297.01/1,478.71
  6. Step 6: Final answer
    x = 1,966.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.