Home / 3,123.09-4,308.93-1,881.09

Finding the Fourth Proportional to 3,123.09, 4,308.93 and 1,881.09

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Solution

The fourth proportional to 3,123.09, 4,308.93 and 1,881.09 is: 2,595.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.09 : 4,308.93 = 1,881.09 : x
  2. Step 2: Convert to fraction form
    3,123.09/4,308.93 = 1,881.09/x
  3. Step 3: Cross multiply
    3,123.09x = 4,308.93 × 1,881.09
  4. Step 4: Simplify right side
    3,123.09x = 8,105,485.13
  5. Step 5: Solve for x
    x = 8,105,485.13/3,123.09
  6. Step 6: Final answer
    x = 2,595.34

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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.