Home / 1,818.15-2,509.18-1,021.56

Finding the Fourth Proportional to 1,818.15, 2,509.18 and 1,021.56

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Solution

The fourth proportional to 1,818.15, 2,509.18 and 1,021.56 is: 1,409.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,818.15 : 2,509.18 = 1,021.56 : x
  2. Step 2: Convert to fraction form
    1,818.15/2,509.18 = 1,021.56/x
  3. Step 3: Cross multiply
    1,818.15x = 2,509.18 × 1,021.56
  4. Step 4: Simplify right side
    1,818.15x = 2,563,280.07
  5. Step 5: Solve for x
    x = 2,563,280.07/1,818.15
  6. Step 6: Final answer
    x = 1,409.83

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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.