Home / 2,865.36-3,954.98-1,686.82

Finding the Fourth Proportional to 2,865.36, 3,954.98 and 1,686.82

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Solution

The fourth proportional to 2,865.36, 3,954.98 and 1,686.82 is: 2,328.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,865.36 : 3,954.98 = 1,686.82 : x
  2. Step 2: Convert to fraction form
    2,865.36/3,954.98 = 1,686.82/x
  3. Step 3: Cross multiply
    2,865.36x = 3,954.98 × 1,686.82
  4. Step 4: Simplify right side
    2,865.36x = 6,671,339.36
  5. Step 5: Solve for x
    x = 6,671,339.36/2,865.36
  6. Step 6: Final answer
    x = 2,328.27

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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.