Home / 3,070.80-4,606.20-1,122.21

Finding the Fourth Proportional to 3,070.80, 4,606.20 and 1,122.21

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Solution

The fourth proportional to 3,070.80, 4,606.20 and 1,122.21 is: 1,683.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,070.80 : 4,606.20 = 1,122.21 : x
  2. Step 2: Convert to fraction form
    3,070.80/4,606.20 = 1,122.21/x
  3. Step 3: Cross multiply
    3,070.80x = 4,606.20 × 1,122.21
  4. Step 4: Simplify right side
    3,070.80x = 5,169,123.70
  5. Step 5: Solve for x
    x = 5,169,123.70/3,070.80
  6. Step 6: Final answer
    x = 1,683.32

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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.