Home / 2,030.20-3,045.30-1,415.80

Finding the Fourth Proportional to 2,030.20, 3,045.30 and 1,415.80

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Solution

The fourth proportional to 2,030.20, 3,045.30 and 1,415.80 is: 2,123.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,030.20 : 3,045.30 = 1,415.80 : x
  2. Step 2: Convert to fraction form
    2,030.20/3,045.30 = 1,415.80/x
  3. Step 3: Cross multiply
    2,030.20x = 3,045.30 × 1,415.80
  4. Step 4: Simplify right side
    2,030.20x = 4,311,535.74
  5. Step 5: Solve for x
    x = 4,311,535.74/2,030.20
  6. Step 6: Final answer
    x = 2,123.70

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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.