Home / 2,866.13-3,955.40-1,687.58

Finding the Fourth Proportional to 2,866.13, 3,955.40 and 1,687.58

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Solution

The fourth proportional to 2,866.13, 3,955.40 and 1,687.58 is: 2,328.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,866.13 : 3,955.40 = 1,687.58 : x
  2. Step 2: Convert to fraction form
    2,866.13/3,955.40 = 1,687.58/x
  3. Step 3: Cross multiply
    2,866.13x = 3,955.40 × 1,687.58
  4. Step 4: Simplify right side
    2,866.13x = 6,675,038.37
  5. Step 5: Solve for x
    x = 6,675,038.37/2,866.13
  6. Step 6: Final answer
    x = 2,328.94

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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.