Home / 1,851.06-2,555.28-1,221.93

Finding the Fourth Proportional to 1,851.06, 2,555.28 and 1,221.93

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Solution

The fourth proportional to 1,851.06, 2,555.28 and 1,221.93 is: 1,686.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,851.06 : 2,555.28 = 1,221.93 : x
  2. Step 2: Convert to fraction form
    1,851.06/2,555.28 = 1,221.93/x
  3. Step 3: Cross multiply
    1,851.06x = 2,555.28 × 1,221.93
  4. Step 4: Simplify right side
    1,851.06x = 3,122,373.29
  5. Step 5: Solve for x
    x = 3,122,373.29/1,851.06
  6. Step 6: Final answer
    x = 1,686.80

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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.