Home / 3,315.40-4,973.91-1,124.15

Finding the Fourth Proportional to 3,315.40, 4,973.91 and 1,124.15

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Solution

The fourth proportional to 3,315.40, 4,973.91 and 1,124.15 is: 1,686.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,315.40 : 4,973.91 = 1,124.15 : x
  2. Step 2: Convert to fraction form
    3,315.40/4,973.91 = 1,124.15/x
  3. Step 3: Cross multiply
    3,315.40x = 4,973.91 × 1,124.15
  4. Step 4: Simplify right side
    3,315.40x = 5,591,391.84
  5. Step 5: Solve for x
    x = 5,591,391.84/3,315.40
  6. Step 6: Final answer
    x = 1,686.49

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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.