Home / 1,339.28-1,846.50-1,102.40

Finding the Fourth Proportional to 1,339.28, 1,846.50 and 1,102.40

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Solution

The fourth proportional to 1,339.28, 1,846.50 and 1,102.40 is: 1,519.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,339.28 : 1,846.50 = 1,102.40 : x
  2. Step 2: Convert to fraction form
    1,339.28/1,846.50 = 1,102.40/x
  3. Step 3: Cross multiply
    1,339.28x = 1,846.50 × 1,102.40
  4. Step 4: Simplify right side
    1,339.28x = 2,035,581.60
  5. Step 5: Solve for x
    x = 2,035,581.60/1,339.28
  6. Step 6: Final answer
    x = 1,519.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.