Home / 1,611.90-2,417.85-1,222.70

Finding the Fourth Proportional to 1,611.90, 2,417.85 and 1,222.70

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Solution

The fourth proportional to 1,611.90, 2,417.85 and 1,222.70 is: 1,834.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,611.90 : 2,417.85 = 1,222.70 : x
  2. Step 2: Convert to fraction form
    1,611.90/2,417.85 = 1,222.70/x
  3. Step 3: Cross multiply
    1,611.90x = 2,417.85 × 1,222.70
  4. Step 4: Simplify right side
    1,611.90x = 2,956,293.11
  5. Step 5: Solve for x
    x = 2,956,293.11/1,611.90
  6. Step 6: Final answer
    x = 1,834.04

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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.