Home / 1,621.48-2,426.70-1,100.20

Finding the Fourth Proportional to 1,621.48, 2,426.70 and 1,100.20

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Solution

The fourth proportional to 1,621.48, 2,426.70 and 1,100.20 is: 1,646.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,621.48 : 2,426.70 = 1,100.20 : x
  2. Step 2: Convert to fraction form
    1,621.48/2,426.70 = 1,100.20/x
  3. Step 3: Cross multiply
    1,621.48x = 2,426.70 × 1,100.20
  4. Step 4: Simplify right side
    1,621.48x = 2,669,855.34
  5. Step 5: Solve for x
    x = 2,669,855.34/1,621.48
  6. Step 6: Final answer
    x = 1,646.55

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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.