Home / 3,102.51-4,281.39-1,686.18

Finding the Fourth Proportional to 3,102.51, 4,281.39 and 1,686.18

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Solution

The fourth proportional to 3,102.51, 4,281.39 and 1,686.18 is: 2,326.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,102.51 : 4,281.39 = 1,686.18 : x
  2. Step 2: Convert to fraction form
    3,102.51/4,281.39 = 1,686.18/x
  3. Step 3: Cross multiply
    3,102.51x = 4,281.39 × 1,686.18
  4. Step 4: Simplify right side
    3,102.51x = 7,219,194.19
  5. Step 5: Solve for x
    x = 7,219,194.19/3,102.51
  6. Step 6: Final answer
    x = 2,326.89

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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.