Home / 1,818.09-2,511-1,621.26

Finding the Fourth Proportional to 1,818.09, 2,511 and 1,621.26

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Solution

The fourth proportional to 1,818.09, 2,511 and 1,621.26 is: 2,239.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.09 : 2,511 = 1,621.26 : x
  2. Step 2: Convert to fraction form
    1,818.09/2,511 = 1,621.26/x
  3. Step 3: Cross multiply
    1,818.09x = 2,511 × 1,621.26
  4. Step 4: Simplify right side
    1,818.09x = 4,070,983.86
  5. Step 5: Solve for x
    x = 4,070,983.86/1,818.09
  6. Step 6: Final answer
    x = 2,239.15

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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.