Home / 1,612.16-2,220.60-1,145.60

Finding the Fourth Proportional to 1,612.16, 2,220.60 and 1,145.60

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Solution

The fourth proportional to 1,612.16, 2,220.60 and 1,145.60 is: 1,577.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,612.16 : 2,220.60 = 1,145.60 : x
  2. Step 2: Convert to fraction form
    1,612.16/2,220.60 = 1,145.60/x
  3. Step 3: Cross multiply
    1,612.16x = 2,220.60 × 1,145.60
  4. Step 4: Simplify right side
    1,612.16x = 2,543,919.36
  5. Step 5: Solve for x
    x = 2,543,919.36/1,612.16
  6. Step 6: Final answer
    x = 1,577.96

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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.