Home / 1,358.40-2,038.64-1,237.44

Finding the Fourth Proportional to 1,358.40, 2,038.64 and 1,237.44

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Solution

The fourth proportional to 1,358.40, 2,038.64 and 1,237.44 is: 1,857.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,358.40 : 2,038.64 = 1,237.44 : x
  2. Step 2: Convert to fraction form
    1,358.40/2,038.64 = 1,237.44/x
  3. Step 3: Cross multiply
    1,358.40x = 2,038.64 × 1,237.44
  4. Step 4: Simplify right side
    1,358.40x = 2,522,694.68
  5. Step 5: Solve for x
    x = 2,522,694.68/1,358.40
  6. Step 6: Final answer
    x = 1,857.11

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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.