Home / 3,071.40-4,608.30-1,123.80

Finding the Fourth Proportional to 3,071.40, 4,608.30 and 1,123.80

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Solution

The fourth proportional to 3,071.40, 4,608.30 and 1,123.80 is: 1,686.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,071.40 : 4,608.30 = 1,123.80 : x
  2. Step 2: Convert to fraction form
    3,071.40/4,608.30 = 1,123.80/x
  3. Step 3: Cross multiply
    3,071.40x = 4,608.30 × 1,123.80
  4. Step 4: Simplify right side
    3,071.40x = 5,178,807.54
  5. Step 5: Solve for x
    x = 5,178,807.54/3,071.40
  6. Step 6: Final answer
    x = 1,686.14

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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.