Home / 1,411.80-2,117.70-1,282.20

Finding the Fourth Proportional to 1,411.80, 2,117.70 and 1,282.20

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Solution

The fourth proportional to 1,411.80, 2,117.70 and 1,282.20 is: 1,923.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,411.80 : 2,117.70 = 1,282.20 : x
  2. Step 2: Convert to fraction form
    1,411.80/2,117.70 = 1,282.20/x
  3. Step 3: Cross multiply
    1,411.80x = 2,117.70 × 1,282.20
  4. Step 4: Simplify right side
    1,411.80x = 2,715,314.94
  5. Step 5: Solve for x
    x = 2,715,314.94/1,411.80
  6. Step 6: Final answer
    x = 1,923.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.