Home / 5,315.82-7,973.88-1,420.23

Finding the Fourth Proportional to 5,315.82, 7,973.88 and 1,420.23

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Solution

The fourth proportional to 5,315.82, 7,973.88 and 1,420.23 is: 2,130.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,315.82 : 7,973.88 = 1,420.23 : x
  2. Step 2: Convert to fraction form
    5,315.82/7,973.88 = 1,420.23/x
  3. Step 3: Cross multiply
    5,315.82x = 7,973.88 × 1,420.23
  4. Step 4: Simplify right side
    5,315.82x = 11,324,743.59
  5. Step 5: Solve for x
    x = 11,324,743.59/5,315.82
  6. Step 6: Final answer
    x = 2,130.39

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1.5x scale

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.