Home / 2,037.40-3,048.90-1,389.40

Finding the Fourth Proportional to 2,037.40, 3,048.90 and 1,389.40

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Solution

The fourth proportional to 2,037.40, 3,048.90 and 1,389.40 is: 2,079.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,037.40 : 3,048.90 = 1,389.40 : x
  2. Step 2: Convert to fraction form
    2,037.40/3,048.90 = 1,389.40/x
  3. Step 3: Cross multiply
    2,037.40x = 3,048.90 × 1,389.40
  4. Step 4: Simplify right side
    2,037.40x = 4,236,141.66
  5. Step 5: Solve for x
    x = 4,236,141.66/2,037.40
  6. Step 6: Final answer
    x = 2,079.19

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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.