Home / 3,123.18-4,686.12-1,480.89

Finding the Fourth Proportional to 3,123.18, 4,686.12 and 1,480.89

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Solution

The fourth proportional to 3,123.18, 4,686.12 and 1,480.89 is: 2,221.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,123.18 : 4,686.12 = 1,480.89 : x
  2. Step 2: Convert to fraction form
    3,123.18/4,686.12 = 1,480.89/x
  3. Step 3: Cross multiply
    3,123.18x = 4,686.12 × 1,480.89
  4. Step 4: Simplify right side
    3,123.18x = 6,939,628.25
  5. Step 5: Solve for x
    x = 6,939,628.25/3,123.18
  6. Step 6: Final answer
    x = 2,221.98

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.