Home / 1,886.24-2,818.20-1,821.65

Finding the Fourth Proportional to 1,886.24, 2,818.20 and 1,821.65

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Solution

The fourth proportional to 1,886.24, 2,818.20 and 1,821.65 is: 2,721.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,886.24 : 2,818.20 = 1,821.65 : x
  2. Step 2: Convert to fraction form
    1,886.24/2,818.20 = 1,821.65/x
  3. Step 3: Cross multiply
    1,886.24x = 2,818.20 × 1,821.65
  4. Step 4: Simplify right side
    1,886.24x = 5,133,774.03
  5. Step 5: Solve for x
    x = 5,133,774.03/1,886.24
  6. Step 6: Final answer
    x = 2,721.70

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.