Home / 3,123.47-4,303.07-2,177.54

Finding the Fourth Proportional to 3,123.47, 4,303.07 and 2,177.54

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Solution

The fourth proportional to 3,123.47, 4,303.07 and 2,177.54 is: 2,999.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.47 : 4,303.07 = 2,177.54 : x
  2. Step 2: Convert to fraction form
    3,123.47/4,303.07 = 2,177.54/x
  3. Step 3: Cross multiply
    3,123.47x = 4,303.07 × 2,177.54
  4. Step 4: Simplify right side
    3,123.47x = 9,370,135.40
  5. Step 5: Solve for x
    x = 9,370,135.40/3,123.47
  6. Step 6: Final answer
    x = 2,999.91

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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.