Home / 1,858.14-2,563.65-1,386.72

Finding the Fourth Proportional to 1,858.14, 2,563.65 and 1,386.72

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Solution

The fourth proportional to 1,858.14, 2,563.65 and 1,386.72 is: 1,913.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,858.14 : 2,563.65 = 1,386.72 : x
  2. Step 2: Convert to fraction form
    1,858.14/2,563.65 = 1,386.72/x
  3. Step 3: Cross multiply
    1,858.14x = 2,563.65 × 1,386.72
  4. Step 4: Simplify right side
    1,858.14x = 3,555,064.73
  5. Step 5: Solve for x
    x = 3,555,064.73/1,858.14
  6. Step 6: Final answer
    x = 1,913.24

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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.