Home / 1,857.90-2,564.13-1,220.37

Finding the Fourth Proportional to 1,857.90, 2,564.13 and 1,220.37

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Solution

The fourth proportional to 1,857.90, 2,564.13 and 1,220.37 is: 1,684.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,857.90 : 2,564.13 = 1,220.37 : x
  2. Step 2: Convert to fraction form
    1,857.90/2,564.13 = 1,220.37/x
  3. Step 3: Cross multiply
    1,857.90x = 2,564.13 × 1,220.37
  4. Step 4: Simplify right side
    1,857.90x = 3,129,187.33
  5. Step 5: Solve for x
    x = 3,129,187.33/1,857.90
  6. Step 6: Final answer
    x = 1,684.26

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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.