Home / 3,123.33-4,309.49-1,864.80

Finding the Fourth Proportional to 3,123.33, 4,309.49 and 1,864.80

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Solution

The fourth proportional to 3,123.33, 4,309.49 and 1,864.80 is: 2,573.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.33 : 4,309.49 = 1,864.80 : x
  2. Step 2: Convert to fraction form
    3,123.33/4,309.49 = 1,864.80/x
  3. Step 3: Cross multiply
    3,123.33x = 4,309.49 × 1,864.80
  4. Step 4: Simplify right side
    3,123.33x = 8,036,326.87
  5. Step 5: Solve for x
    x = 8,036,326.87/3,123.33
  6. Step 6: Final answer
    x = 2,573.00

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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.