Home / 1,818.42-2,508.80-1,021.62

Finding the Fourth Proportional to 1,818.42, 2,508.80 and 1,021.62

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Solution

The fourth proportional to 1,818.42, 2,508.80 and 1,021.62 is: 1,409.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.42 : 2,508.80 = 1,021.62 : x
  2. Step 2: Convert to fraction form
    1,818.42/2,508.80 = 1,021.62/x
  3. Step 3: Cross multiply
    1,818.42x = 2,508.80 × 1,021.62
  4. Step 4: Simplify right side
    1,818.42x = 2,563,040.26
  5. Step 5: Solve for x
    x = 2,563,040.26/1,818.42
  6. Step 6: Final answer
    x = 1,409.49

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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.